Brochure groen_GB_LR

Product Catalog 

Incl. Collection Green Residual Flows 

2018 

Naturally…

Colophon 

5 th edition 

Disclaimer 

This edition has been created with information from different sources. 

Various organisations collaborated and provided information. DEN 

OUDEN GROEP checked and confirmed this information as much as 

possible, however we are not liable for any errors or consequences. 

© March 2018, DEN OUDEN GROEP 

This brohcure can also be downloaded via 

www.denoudengroep.com

Prologue 

DEN OUDEN GROEP, a family business from Schijndel strongly focused on service, offers an expansive 

package of services and products concerning nature and soil. As such, DEN OUDEN GROEP offers a 

complete concept for soil improvers, biofuel, soil fertilisation, soil safety, Urban renewal and concrete 

structures. 

DEN OUDEN Groenrecycling, part of DEN OUDEN GROEP, is specialised in processing green residual 

flows into soil improvers, groundcovers, biofuels and bio resources. On a yearly basis, we process 450,000 

ton of green residual flows, such as grass, trimmings, stubs and other green waste of governments, 

companies and individuals. 

This product catalog contains a selection from our product range. This document outlines the manner 

in which we collect your residual flows and process them into new premium products for various 

applications, naturally... 

Tom Klaus, manager DEN OUDEN Groenrecycling BV

Content 

Sustainability 

• Sustainable processing .................... 5 

• CO 2 reduction ............................ 6 

• Forestry ................................. 6 

• Innovation ............................... 6 

Collection of Green Residual Flows 

• A new beginning… for your green residual flows .7 

• Categories supply Green Residual 

incl. acceptance conditions ............. 8-11 

Soil improvers I Green spaces 

• Substrado ® potting Soil . .................. 12 

• Substrado ® Sludge Fertilizer ............... 13 

• Natural Compost 0-15 ................... 14 

• Leaf Mulch .............................. 15 

• Fertilized Topsoil ......................... 16 

• Peat ................................... 17 

• Substrado ® BBV ......................... 18 

• Tree Granulate Porfier .................... 19 

• Tree Granulate Grauwacke ................ 20 

• Tree Granulate Lava 16/32 ............... 21 

• RIWI ® Tree Substrate ..................... 22 

• Tree Sand ............................... 23 

• Tree Soil ................................ 24 

• Premium Topsoil ........................ 25 

Soil improvers I 

Agriculture & (Greenhouse) Horticulture 

• Substrado ® Fruit corps ................... 26 

• RHP-Compost . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 

• Natural Compost ........................ 28 

• Humus Compost ......................... 29 

•Farming Compost ........................ 30 

• Substrado ® Woodfibre .................... 31 

• Composted Woodchips ................... 32 

Ground Covers 

• French Bark (Pinus Maritima) . ............. 37 

• Needle Bark (Pinus Sylvestis) .............. 38 

• Epicea Tree Bark ......................... 39 

• Douglas Tree Bark ....................... 40 

• Sawmill chips . ........................... 41 

• Animal Bedding ......................... 42 

• Lava ................................... 43 

Additional product tree growth sites 

• Airo-Tec ® Aeration system ............... 44 

• Airo-Tec ® Aeration post . .................. 45 

• AquaTec Flash .......................... 46 

• AquaTec Water buffer . .................... 47 

Biomass 

• Biofuels & Bio Resources .................. 48 

Trunk-wood chips ......................49 

Pruning-wood chips ....................50 

Shreds ............................... 51 

Sieve overflow ......................... 52 

A-wood Chips ......................... 53 

B-wood Chips .........................54 

• Biofilter materials ........................ 55 

Torn root-wood. ....................... 56 

Tree Bark .............................57 

• BioBased Prototypes ..................... 58 

Garden bench ......................... 59 

Fences ...............................60 

Copying- and letter paper ...............61 

Organic Fertilizers ................... 62-63 

Green Roof Substrates 

• Green Roof Substrate . .................... 33 

• Green Roof Substrate Extensive ........... 34 

• Green Roof Substrate Intensive ........... 35 

• Green Roof Substrate Sedum cultivation ....36 

Certificates and quality marks .......... 64 

Contact ............................. 66-67


Sustainable processing 

DEN OUDEN GROEP is a company where sustainability is important. We think sustainable, we do 

sustainable and we innovate to be more sustainable. For now we have 70 years of experience and 

the knowledge and expertise of our partners. 

We follow a chain approach for the processing of green 

residual flows. We see the entire process in light of acquiring 

the maximum sustainable return from the green residual 

flows against an as low as possible CO 2 -emission. This already 

starts with trimming, mowing and/or grubbing of the 

greenery and only stops with transferring the greenery into 

energy, premium soil improvers or ground materials for the 

manufacturing industry. 

Our chain approach requires proper collaboration between 

you as a client and us. This collaboration is aimed at the 

long term and has to contribute to us, together, acquiring 

the maximum return from the green residual flows to be 

processed. 

Within this collaboration, our role is aimed at providing you 

as a client with support and advice and creating an effective 

work method with an adequate and rapid service for the 

5


customer. Here, our relation manager takes the lead of the 

project and is supported by our planner and the production 

managers of our processing locations. 

Sustainable processing starts with a clear and sorted offer 

of the green residual flows. Our purpose is to create the 

correct division in the residual flows and to limit subsequent 

separation. By dividing the greenery properly early in 

the process the necessity for extra actions is prevented. 

Consequently, less transport is necessary, extra separation 

does not need to take place and, moreover, cost reduction is 

realised for the client. With this approach, we minimalise the 

CO 2 -emission at our processing locations. 

Forestry 

DEN OUDEN GROEP supports forestry. This way we ensure the 

chipping and/or disposal of green residual flows to one of 

our processing locations or energy plants. The green residual 

flows for biofuel mostly originate from public spaces and 

forests with low or no ecologic value, because it often can 

remain there. Internationally there is more need for biofuel. 

We perform the production of biofuels on our own locations, 

but also in forests or with colleague companies. If you localise 

production to be near ovens, you reduce the CO 2 -emission. 

CO 2 -reduction 

By awarding the CO 2 -reduction certificate we provide insight 

into the amount of reduced CO 2 -emission with regard to a 

European reference with fossil fuels. We award the certificate 

under the auspices of a completely independent certification 

institution that, for instance, provides the accreditation and 

award of the NTA 8080. 

With the certificate the client shows that they effectively 

contributed in the entire chain to reducing the use of fossil 

fuels and as such have contributed to reducing the CO 2 - 

emission. 

We have an expansive and well maintained machine park with 

modern truck (crane) combinations. The material is deployed 

from our efficient and economical network of reception, 

transhipment and process locations for green residual flows. 

The machines that process the residual flows on this location 

are environment-friendly because of their electric and/or 

hybrid power. As such, during processing CO 2 -emission is also 

reduced. 

We are certified in accordance with the CO 2 -performance 

ladder. This is demonstrable proof that we – and our 

partners, subcontractors and suppliers – are heading in the 

right direction and continually reduce our CO 2 -production. 

This also means that we do not just do so in our company 

management, but also in our projects. In our policy we are 

attentive to how, on the one hand, we can develop in a 

sustainable manner (energy and materials) and on the other 

hand how we can reduce (energy, CO 2 and waste). Our energy 

policy is aimed at making our company management more 

energy sufficient and sustainable. Our objective is to realise 

2 percent of CO 2 -reduction each year. 

We share the knowledge we gained and continue to gain 

with our subcontractors and suppliers, so that they will also 

reduce their own CO 2 -production. Throughout the entire 

chain a conscious effort is made to reduce the emission of 

CO 2 . 

Innovation 

Innovation begins with experience, creative craftsmanship 

and the courage to think outside the box. As entrepreneurs, 

this is in our blood. We see opportunities, create opportunities 

and take opportunities for our own. 

The continual innovation of our organisation and products 

is the key to our success. As such, we also stimulate our 

subcontractors and suppliers to provide better solutions. 

Together with our suppliers, subcontractors and our skilled 

and very experienced employees we are able to think of 

innovative solutions and execute these. 

The advantage of our organisation is that our knowledge 

is not limited to only the (green) waste sector of the Dutch 

market. We are active worldwide across various sectors, 

such as the production of (organic) resources and building 

materials for farming, gardens and roads, offshore industry, 

ground, road and water construction, (utility) construction, 

green recycling and area development. By these expansive 

activities an interaction is established between the different 

disciplines. This interaction is the source of our innovation 

and results in new products, cleaner and more efficient work 

methods and less residual flows. 

6


A new beginning... 

for your green residual flows 

The application possibilities for green residual flows are aplenty. Therefore, we invest in the 

development of new applications of green residual flows in accordance with the cascade principle. 

The applications of green residual flows as soil improver or as 

biomass for energy plants is common knowledge and usually 

the only way green residual flows are processed. DEN OUDEN 

GROEP also supports the application of biomass as resource 

for the industry. 

Alongside the above-mentioned applications green residual 

flows also contain resources for application in, for instance, 

the pharmaceutical, plastic, paper and clothing industry. DEN 

OUDEN GROEP supports, stimulates and is closely involved in 

development in these areas. 

Profit volume 

Cascade model 

Volume 

Pharmaceutical products 

and premium chemicals 

Food and Animal Food 

Chemicals and materials 

Fuels 

Energy and heat 

Furthermore, at present we also know applications for 

grass that were previously unused. We deliver qualitatively 

premium grass to our partners to be processed into cardboard. 

This cardboard is applied in for instance the production of 

sustainable packaging materials. 

One of the last developments in which DEN OUDEN GROEP 

was closely involved is the bio refinery from taxus to Taxol. 

Taxol is a valuable resource for the medicine industry and 

is applied as a component in medicines against cancer. 

For some time, we work closely with Taxustaxi. On our 

locations free taxus has been collected for the fight 

against cancer. 

The Cascade principle focuses on the application of flows in 

places where they have the most value with the eventual 

objective of a complete bio based economy, where green 

residual flows are the resource for new products. 

Our examples of this are our bio filters from tree roots, 

substrates for planting site (improvement), and resources for 

the chipboard industry and premium RHP-Compost as peat 

replacement for the soil industry. Because of the production 

of RHP-compost, less peat needs to be sourced from peat 

fields in, for instance, Poland and Estonia. Consequently, 

valuable nature is maintained, less CO 2 emitted to get this 

peat to Holland and maximum profit is obtained from a part 

of the green residual flows. 

In collaboration with 

7

Collection Inname groene of Green reststromen Residual Flows 

Category 

Green waste 

Trimming wood clean 

Description acceptable conditions 

- Mix of wooden material incl. roots 

- Evergreens, conifers, shrubs 

- No acceptance of loose leafs and/or grass 

- No acceptance of organic waste 

- No acceptance of roof cane 

- Small amount of soil and/or clay allowed 

- Branches of deciduous trees without leaf 

- Occur with winter trimming 

- Branch wood with log diameter up to 20 cm 

- Soil and/or clay absolutely not present 

Tree stubs > 30 cm 

- Log diameter minimum 30 cm 

- No rotting material 


Log wood 

Trimming chips 

- Log diameter 20 – 60 cm / > 60 cm 

- Length 2 – 6 m 

- Free of branches and leaves 

- Maximum 20% curve (obsolete) 



- Fraction of trimming chips is 2 cm to max. 7 cm 

- It has to be shredded smoothly 

- Maximum 10% needle and/or leaf 

- Maximum 3% fraction 7-10 cm 


Wood chips 

Shreds 

- Fraction of Wood chips is 2 cm to max. 7 cm 

- It has to be shredded smoothly 

- Maximum 3% fraction 7-10 cm 


- Free of branches and leaves 

- Made of trunks thicker than 20 cm 


- Quality selection trimming chips 

- Fraction of shreds is 7 cm to max. 25 cm 

- Maximum 20% needle and/or leaf 


We determine the amount of pollution on the basis of weight pollution (pollution on the basis of mass) and on the basis of volume pollution (pollution on the basis of size). 

On the basis of pollution we determine under which category the load offered can be listed and collected. The offered material may contain up to 2% of inorganic 

contamination and not contaminated with burnt material, c-wood, wood-b, oil / grease, hazardous chemicals and / or asbestos. The presence of land and / or earth is in 

your power offered sometimes unavoidable. If this is undesirable, will be mentioned with the category. This acceptance conditions are subject to change. The acceptance 

conditions of Den Ouden Groenrecycling apply to all offers, agreements and deliveries. The conditions of Den Ouden Groenrecycling are registered and accessible on 

our website www.denoudengroep.com. 

8

Collection Inname groene of Green reststromen Residual Flows 

Potential deficiencies 

More than 20% loose leaf between branches 

incl. roots and evergreens 

More than 20% grass between branches 

incl. roots and evergreens 

More than 2% inorganic pollution 

Next step 

-> Acceptance category ‘leaves’ 

-> Acceptance category ‘grass’ 

-> Rejection/deliberation account manager 

With presence of branches with leaf 

With presence of earth and/or clay 


-> Acceptance category ‘green waste’ 



More than 5% branch wood incl. tree roots 




Wood trunk with branches (in logs 20-60) 

Short lengths of up to 2 meters 

In the presence of inorganic pollution 

More than 2% of inorganic pollution 





More than 3% fraction 7-10 cm 

More than 10% to maximum 20% needle and/or leaf 

With presence of soil and/or clay 

With visible inorganic pollution 


-> Acceptance category ‘shreds’ 





More than 3% fraction 7-10 cm 

More than 10% to maximum 20% needle and/or leaf 









More than 20% needle and/or leaf 

With presence fraction greater than 25 cm 



More than 2 % inorganic pollution 

-> Acceptance category ‘reduced green waste’ 

-> Acceptance category ‘clean trimming wood’ 










9


Category 

Reduced green waste 

Description acceptable conditions 

- Mix of wooden material that has been reduced 


Leaf 

- Occurs with the emptying of leaf baskets 

- Small amount of soil allowed 

- Swept-up waste is not allowed 

Grass 

- Occurs with mowing of verges, parks and (large) lawns 


Ditch trimmings 

- Occurs with mowing ditches and waterways 


Sick tree wood 

(i.a. iepen) 

Invasive plant species 

- Sick tree wood should be reported at least 5 working days 

in advance 

- Fine wood (braches) should be separated from rough wood 

(log wood and tree stubs) 

- Collection and processing is only possible on the Den Ouden 

Location Het Gooi in Muiderberg 

- Invasive plant species should be reported at least 5 working 

days in advance 

- Collection and processing is only possible on the Den Ouden 

Location Land van Cuijk (Haps) 

- Only organic material. 

A-Wood 

- Unpainted and untreated wood 

B-Wood 

- Wood that does not fall into the categories A- or C-wood, 

including painted, varnished, and laminated wood 







10


Potential deficiencies 

With presence fraction larger than25 cm 

With presence fraction larger than 25 cm with presence 

of soil and/or clay 



More than 20% presence of grass between the leaves 


Next step 





-> Acceptance category ‘grass’ 






Den Ouden holds a certificate for processing ‘sick tree wood’. 

The conditions and procedures of the BVOR-certification 

system apply to processors of sick tree wood. 

This certificate replaces the ‘elm certificate’. 

-> Acceptation only after deliberation with 

account manager 

Den Ouden holds a certificate for processing 'invasieve exoten'. 

The conditions and procedures of the BVOR-certification 

system apply to processors of Invasive plant species. 

-> Acceptation only after deliberation with 

account manager 

More than 2 % inorganic contamination 

More than 2 % organic contamination 

More than 2 % contamination by treated wood 

Contamination by impregnated wood (C-wood) 

-> Rejection/consulting account manager 


-> Acceptance B-wood 


More than 2% inorganic contamination 

More than 2% organic contamination 

Contamination by impregnated wood (C-wood) 










11


Substrado ® Potting Soil 

Substrado ® Potting Soil is the name of universal potting soil. The product is composed of 

various resources including peat, garden peat, perlite, compost and coconut grid. The product 

can be customised for you if necessary. Because of the special resources a lightweight 

substrate is created which contains nutrients throughout and can buffer much moisture. 

With processing it is recommended to press the product as little as possible. 

Advantages 

• Balanced supply of nutrients 

• Good capacity to absorb water 

• Increases the air level in the soil 

• Excellent application characteristics because of its 

light and airy structure 

Areas of application 

• As growth medium in large pots 

• Additional soil for planting open soil plants in a pot 

• Soil improvement for flower beds 

• Soil improvement for planting hedges for a better 

and more uniform uptake 

Average composition 

Substrado® Potting Soil 

pH 5,5-7,0 

EC 

0,5-1,5 mS/cm 

12


Substrado ® Sludge Fertilizer 

Substrado ® Sludge fertilizer is a fertilizer that improves the soil structure. It is made of 

compost, garden peat and various fertilizers including champost. 

By mixing Substrado ® Sludge fertilizer with existing soil, a soil filled with nutrients is created. 

Advantages 

• Structure improvement of the soil 

• Ideal as plant food to mix in the plant hole 

• Gives the soil the structure it needs 

• Provides nutrients over a longer period of time 

• Safe on costs by mixing your existing soil 


• Gardens 

• Decorative parks 

• Planting of seeds 

• Infrastructure 


Substrado® Sludge Fertilizer 

Dry matter 40-50% 

Organic matter 35-50% 

Nitrogen 

Phosphate 

Potassium oxide 

Magnesium oxide 

9,0-14,0 kg/ton DM 

6,0-9,0 kg/ton DM 

11,0-17,0 kg/ton DM 

4,0-5,0 kg/ton DM 

pH 6,0-7,0 

EC 

1,0-4,0 mS/cm 

13


Natural Compost 0-15 

Natural Compost holds the certificate “Certified Compost Class A” and “Control Union.” 

Control Union is the independent certificate that guarantees that the resources are of natural 

origin and that the final product can be used in organic cultivation. By applying compost, 

fluids and nutrients are better absorbed and the fertility of the soil is also improved. 

Advantages 

• Even provision of nutrients 

• Optimal buffer of nutrients and water 

• Made of 100% natural products 

• Free from weed seeds and sickness 


• Tree nursery 

• Green areas 

• Garden landscaping 


Natural Compost 0-15 



KLASSE A 

Nitrogen 

Phosphate 



7,5-11,0 kg/ton DM 

3,0-5,5 kg/ton DM 

5,0-9,0 kg/ton DM 

2,0-4,0 kg/ton DM 

pH 5,5-7,6 

EC 

Respiration value 

< 1,5 mS/cm 

< 15 mmol/O 2 /gr. d.s./hour 

14


Leaf Mulch 

Leaf Mulch is made of 100% leaves and composted on rills. Because of the temperature 

reached during the composting, possible weed seeds lose their ability to sprout. A large 

advantage of Leaf Mulch is that it stimulates a diverse soil life by which deficiencies are 

reduced and protection against illnesses and funguses is provided. By applying the product 

as a mulch layer, the soil life creates a beautiful rough foundation. 

The application of leaf mulch around the tree or in the watering spots suppresses weeds and 

as such the soil is better able to retain fluids. 

Advantages 

• Retention of fluids and nutrients 

• Prevents compaction 

• Reduces weeds 

• Reduces dehydration 

• Protection against illnesses and funguses 

• Mechanically distributable and easy to apply 


• Greenery 


• Buxus cultivation 


Leaf Mulch 



Nitrogen 

Phosphate 



8,0-10,0 kg/ton DM 

3,0-5,0 kg/ton DM 

5,0-7,0 kg/ton DM 

2,0-4,0 kg/ton DM 

pH 6,0-7,5 

EC 

< 1,5 mS/cm 

15


Fertilised Topsoil 

Because we only use organic products, our fertilised topsoil does not contain artificial 

fertilizers. Because of the high level of nutrients and the correct acidity (pH), plants will 

grow optimally in our fertilised topsoil. Because of the large proportion of organic substance 

fertilised topsoil has a good water retaining capacity. Plants have access to water and 

nutrients for a longer period of time and will therefore grow better. 

Advantages 

• No artificial fertilizers 

• High level of nutrients 

• Correct acidity (pH) 

• Good fluid retaining capacity 


• Gardens 

• Borders 

• Beds 


Fertilised Topsoil 


Organic matter 5,0-10,0% 

pH 6,0-8,0 

16


Peat 

Peat, also called garden Peat, consists of unearthed blackpeat. After the blackpeat has 

been unearthed and is still damp, it is frozen dried and ground. Garden Peat improves the 

amount of organic substance in the soil and lowers the acidity. As such, the soil becomes 

lighter and the roots of your plants can develop better. Garden Peat offers a healthy basis 

for acid loving plants in sand and clay. 

Advantages 

• Stimulation for acid loving plants 

• Natural product 


• Gardens 


• Green spaces 

• Lowers the acidity (pH) of the ground 


Peat 

Dry matter > 25% 

Organic matter > 70% 

pH 3,5-5,0 

EC 

< 0,4 mS/cm 

17


Substrado ® BBV 

Substrado ® BBV is made of peat, natural compost, perlite and biological additives. It makes 

for a soil that is rich in fungi and vegetable mould. This substrate improves the growth of 

trees and is cheaper and easier to use than, for example, tree sand. You only have to mix 

the Substrado ® BBV with the soil that is already there and everything will sort itself out. 

Naturally, we will analyse the soil beforehand, so that we can give accurate advice about 

the proportion that needs to be mixed. 

Advantages 

• Improves the water retaining ability of the soil 

• Improves processability 

• Raises the levels of oxygen in the soil 

• Prevents soaking 

• More effective space for roots per m³ 


• In open areas and underneath hardened surfaces 

• Plant beds 

• Roadsides 

• Pavements 

• Car parks 

• Residential areas 

In collaboration with: 


Substrado® BBV 

CUSTOMIZED 

18


Tree Granulate Porfier 

Tree granulate Porfier is specifically meant for creating planting spaces in heavily burdened 

areas such as roads, cycling paths and car parks (traffic class 1 to 5). The tree granulate 

has its basis in Porfier and ripened clay and offers grow space for tree roots to develop in 

circumstances that conform to civil technological demands. This makes it possible to develop 

healthy trees in areas where trees can either not develop or would cause problems by roots 

damaging the pavement. Porfier is a recycled product. It is not a mineral, but a composite 

product on the basis of secondary resources and therefore justified in terms of sustainability. 

Advantages 

• Created from 100% recycled resources 

• Justified in terms of sustainability 

• Good water and air provision 

• Large pore volume 

• High capacity 

• Capillary function 

• In accordance with Soil Quality Decree 

• No de-mixing 


• Trees and beds near heavily burdened roads 

• Plant space improvement of existing trees 

• Infratechnology 


Tree Granulate Porfier 

Dry matter > 80% 

Organic matter > 1% 

Pore volume (after compacting) > 35% 

Water permeability (Kf after compacting) > 1 mm/min. 

Maximum water buffer after compacting > 350 liter/m 3 

CBR value at a procter density of 100% > 70% 

One point procter density > 1775 kg/m 3 

Bearing strength (LWD) after compacting > 40 MPa 

Dry density at a density level of 97% ca. 1874 kg/m 3 

Dry density of the stone fraction ca. 2640 kg/m 3 

Respiration rate 

< 5 mmol O 2 

/kg o.s./hour 

Acidity (pH) 5-7,5 

Chloride content (CL) 

< 210 mg/liter substrate 

Oxygen percentage (measured under the asphalt, 

in the growing season) > 16% 

Fraction 

16-32 mm 

Recycled stone ca. 85% 

Specific weight ca. 1600 kg/m 3 

19


Tree Granulate Grauwacke 

Tree granulate is specifically aimed at creating planting areas in heavily burdened situations, 

such as roads, cycling paths and car parks (traffic category 1 to 5). The tree granulate 

has a basis of Grauwacke-rubble and ripened clay. The product grows space for tree roots 

to develop in situations in which strict civil technological demands apply. This makes it 

possible to develop healthy trees in places where trees would otherwise not grow or would 

cause problems by causing rootdamage to the pavement. Grauwacke is a naturally broken 

sustainable stone and conforms to the prevailing environmental classification in accordance 

with Soil Quality Decree. 

Advantages 

• Proper water and air provision 

• Large pore volume 

• High capacity 

• Capillary function 

• In accordance with Soil Quality Decree 

• No demixing 


• Trees beds near heavily burdened roads 

• Planting space improvement for existing trees 



Tree Granulate Grauwacke 

Pore volume > 20% 

CBR value at a procter density of 100% > 55% 

Water permeability (Kf after compaction) 

> 1 mm/min. 

One point procter density > 1775 kg/m 3 

Dry density at a density level of 97% 1841 kg/m 3 


Bulk density ca. 1700 kg/m 3 

Fraction 

16-32 mm 

20


Tree granules Lava 16/32 

Tree granules Lava 16/32 consists of granules of volcanic igneous rock. Because the evenness 

coefficient of the composition is very low, the product leaves plenty of space for the roots. During 

the solidification of the rock, a stone skeleton with hollow spaces is formed. These hollow spaces fill 

themselves with fertile soil and water. Tree granule is a very loose material with a lot of space for 

oxygen and water. When it rains, the water will easily seep through the soil. Some of this water will 

be absorbed by the hollow structure to be made available for the tree roots. The skeleton carries 

the pressure of the hardened surface, while allowing the roots to grow within the hollow spaces. In 

this way, large growing spaces can be created in small areas, such as roadsides. With these tree 

granules, trees will have an excellent place to grow with more than enough strength to support 

hardened surfaces. The lave is mined in carefully selected quarries. 

Advantages 

• Large water storage capacity 

• Very porous to allow oxygen to reach the roots 

• Good anchoring and healthy root growth of your tree 

• Good tree growth 

• Capillary action 

• Decreased lifting of surface by roots 


• Tree and plant sections 

• Suitable for medium burdened road foundations 

• Underneath parking spaces 

• Growth improvement of mature trees 



Tree granules Lava 16/32 

Pore volume >40% 

CBR value at a procter density of 100% >50% 

One point procter density 1350-1450 kg/m 3 

K value 

min. 1 mm/min. 


Fraction 

16-32 mm 

pH 5-7,5 

21


RIWI ® 

Tree Substrate 

RIWI ® 

Tree substrate is very suitable as a planting space improver for trees in heavily 

burdened areas such as car parks and roads. The substrate solidifies the ground, but because 

of the presence of a kind of soil guard the pressure can be absorbed and divided, so that 

trees can grow well. 

It is composed of various products, such as lava stones. Consequently, an optimal grow 

situation for tree roots is guaranteed with regard to root growth, air supply, capillary 

function and water absorbing capacity. Here, the tree substrate maintains sufficient 

capacity (CBR>50%) to guarantee long term robustness. 

Advantages 

• Large supporting power/compressable 

• Rich in nutrients 

• Sufficient space for root growth 

• Plantable immediately 

• No additional fertilisation necessary 

• In accordance with the demands of the 

Soil Quality Decree 

• Developed in accordance with German FLL guidelines 

• In accordance with the demands for stone mixtures under 

road surfaces (RAW regulations) 

• Is produced under manufacturer-own declaration 


• Trees in urban areas 

• Civil and land development works 

• Under pavement/asphalt heavily burdened or not 


RIWI ® Tree Substrate 


Organic matter 2,0-5,0% 

CBR min. 50% 

pH 6,5-8,5 

22


Tree Sand 

Tree Sand is made of specially selected sand and compost, which improves the water and 

air provision. Tree Sand is an excellent product to apply as a mix between pavement and 

plants in the soil due to its unimodality. Tree Sand is RAG certified and therefore offers 

you the guarantee that the product meets premium quality demands. Tree Sand is also 

available according to standard RAW regulations. 

Advantages 

• No density/closure of the soil due to unimodality 

• High humus level with regard to organic substance 

• High water permeability 

• Sufficient supporting power for the pavement 



• Sports fields 

• Culture-technology 



Tree Sand 300 500 

Moisture 10-20% 10-20% 

Organic matter 3,5-5,0% 3,5-5,0% 

Lutum 0,5-4,0% 0,5-4,0% 

Chloride content < 440 mg/l DM < 440 mg/l DM 

M(50) < 400 > 400 

D60/D10 < 2,5 < 3,0 

pH 5,0-7,5 5,0-7,5 

Respriration value 

(mmol/O 2 /gr.DM/hour) max. 5 max.5 

EC < 605 mS/m < 60 mS/m 

23


Tree Soil 

Tree soil (also called green soil) offers a good basis for planting and growing trees. A stable 

anchoring and healthy root growth are the result when applying tree soil. Tree soil contains 

important nutrients for your tree and provides balance in the soil by providing a proper 

structure. This product is ideal for planting trees in open ground, but tree soil can also be 

used to level and fill up the ground. 

Advantages 

• Plantable immediately 

• No additional fertilisation necessary 

• Large water retention capacity 

• Proper anchoring and healthy root growth of your tree 

• Ideal for plant space improvement in open ground 



• Gardens 

• Culture technology 



Tree Soil 


Lutum < 10% 

Chloride content 

< 440 mg/l DM 

pH 5,5-7,5 


EC 

< 12 mmol/O 2 /gr.DM/hour 

< 60 mS/m 

24


Premium Topsoil 

Premium Topsoil (soil) is a good basis for your plant and improves the structure of the 

ground. The Topsoil has been composed with care and consists of soil material of minerals 

and organic soil. The Topsoil is still unfertilised and can, if necessary, be mixed with one of 

our compost products and/or fertilizers. Our Topsoil meets the requirements of RAW 2015 

A1-B1-C1 and can be applied freely. 

Advantages 

• Improves the soil structure 

• Can be fertilised with various compost products 

• Free of pollutions 

• Various gradations possible 


• Infra technology 

• Culture technology 

• Lawn 

• Playgrounds 


• Agriculture 


Premium Topsoil 



Chloride 

EC 

< 350 mg/l 

< 1,5 mS/cm 

pH 4,8-7,5 


< 12 mmol/O 2 /gr.DM/hour 

25

Soil improvers I Agriculture & (Greenhouse) horticulture 

Substrado ® Fruit crops 

Substrado ® Fruit Crops is a stable and homogenous growth medium that stimulates the 

roots of your fruit plants. By adding humane and fulvine acids the old root rests are actively 

broken down wich makes the new growths develop better. With a balanced supply of 

nutrients, the special recipe ensures a rapid and equal growth of your plants. 

Substrado ® Fruit Crops is composed of natural compost, garden peat, perlite, coconut and 

various additives. We can customise the product to fit your needs for an optimal result. 

Advantages 

• More rapid development of new growth 

• Stimulates root growth 

• Easy growth because of light structure 

• Economic because of quick applicability 

• Stimulates equal growth 


• Fruit crops new growths 

• Fruit crops regrowth 

In collaboration with 


Substrado® Fruit crops 



Nitrogen 

Phosphate 



5,0-8,0 kg/ton DM 

1,5-3,0 kg/ton DM 

3,0-4,0 kg/ton DM 

2,0-3,0 kg/ton DM 

pH 5,0-6,5 

EC 

0,5-1,5 mS/cm 

26


RHP-Compost 

RHP-Compost is the highest quality compost available in the market. RHP is the certificate 

for substrates (soil) and substrate resources. This certificate represents not only the high 

quality of the end product, but also of the resources and the production process. As such, an 

end product of a constant high quality is created. Therefore, it is evident that this compost 

should be free of weeds and pathogens such as detrimental nematodes. Moreover, the 

ripeness of the compost is guaranteed and is measured by means of the respiration value. 

RHP-Compost is available at our location in Haps. 

Advantages 

• Guarantee of ripeness 

• Free of weed seeds and pathogens 

• Uniform product throughout the years 

• Large proportion of organic substance 

• Better nutritional value than peat 

• Available in various fractions 

• Respiration value < 15mmol O 2 /kg o.s./hour 


• Mix in soil as partial peat replacement 

• Sprinkle on borders 

• Improve structure of heavy soils 


RHP-Compost 



Nitrogen 

Phosphate 



8,5-12,5 kg/ton DM 

4,0-6,0 kg/ton DM 

6,5-8,5 kg/ton DM 

2,0-3,5 kg/ton DM 

pH 7,5-8,5 


< 15 (mmol/O 2 / gr. d.s./hour) 

EC 

1,0-1,8 mS/cm 

27


Natural Compost 

Natural Compost holds the certificate ”Certified Compost Class A” and ”Control Union”. 

Control Union is the independent certificate that guarantees that the resources are of natural 

origin and that the final product can be used in organic cultivation. By applying compost, 

fluids and nutrients are better absorbed and the fertility of the soil is also improved. 

Advantages 

• Even provision of nutrients 

• Optimal buffer of nutrients and water 

• Made of 100% natural products 

• Free from weed seeds and sickness 


• Vegetable cultivation 

• (Greenhouse) horticulture 



Natural Compost 



Nitrogen 

Phosphate 


7,5-11,0 kg/ton DM 

3,5-5,5 kg/ton DM 

5,0-9,0 kg/ton DM 

KLASSE A 


pH 5,5-7,6 

2,5-4,0 kg/ton DM 

EC 


Fraction 

max. 1,5 mS/cm 

max. 12 mmol/O 2 /gr.DM/hour 

0-15 / 0-20 / 0-40 mm 

28


Humus Compost 

Humus Compost is a dry and loose product that improves the soil life. Humus compost 

contains a large amount of wood and twigs, by which the soil structure improves for a 

longer period of time. Because of the large proportion of wood and twigs it provides nutrition 

and energy to the soil life. Humus compost is ideal to increase the percentage of organic 

substance in the soil. 

Advantages 

• Improves the structure of the soil 

• Improves the stability of the soil 

• Reduces compaction 

• Reduces dust-sensitivity 


• Arboriculture 


• Gardens (under layer) 



• (Greenhouse) horticulture 


Humus Compost 



KLASSE A 

Nitrogen 

Phosphate 



4,0-6,5 kg/ton DM 

1,5-2,5 kg/ton DM 

3,0-5,0 kg/ton DM 

1,5-2,0 kg/ton DM 

pH 6,5-8,0 

EC 

0,5-1,5 mS/cm 

29


Farming Compost 

Farming Compost is a nutritious compost that is well suited to farming, horticulture and 

agriculture. The proportion of organic substance is favourable in comparison with animal 

fertilizers. Farming Compost stimulates the soil, by which the structure of the soil improves 

and nutrients are more easily available to the plant. 

Advantages 

• Improves the structure of the soil 

• Improves the stability of the soil 

• Reduces compaction 

• Reduces dust sensitivity 

• Provides much nutrition 


• Farming 


• Horticulture 



Farming Compost 



Nitrogen 

Phosphate 



5,0-7,5 kg/ton DM 

2,5-3,5 kg/ton DM 

3,5-6,5 kg/ton DM 

1,5-3,0 kg/ton DM 

pH 6,5-7,5 

EC 

1,5-3,0 mS/cm 

30


Substrado ® Woodfibre 

Substrado ® Woodfibre is produced from wood compost that is made into fibres. This creates a 

hygienised product with a very fine structure. By composting the wood, the final product gets 

a dark colour. In the final stages of the production process, the product is sieved to 0-30 mm, 

and larger pieces are removed. 

Advantages 

• Improves the structure 


• Recycled product 

• Mechanically distributable and easy to use 

• Activates soil life 


• Structural improvement of heavy soil 

• As a mixture with potting compost 

• Mulching for example around the tree 

• Footpaths 

• Riding tracks 


Substrado® Woodfibre 


Organic matter min. 30% 

Size 

0-30 mm 

31


Composted Woodchips 

Composted Woodchips are bigger pieces of wood suitable to mix into heavy soils in order to 

gain structure or to spread around the tree in order to stimulate a diverse soil life and provide 

nutrients over a longer period of time. Because the wood is composted and hygienised, soft 

material as bark and twigs disappears. Composted wood chips are sieved to 15-50mm and 

are therefore very suitable for long term structure improvement of the soil. This fraction is 

also used for paths intensively walked on. For riding paths in for instance fruit cultivation we 

customise larger Woodchips. 

Advantages 

• Structure improvement 


• Recycled product 

• Mechanically distributable and easy to use 

• Activiates soil life 

• Longer available than Substrado ® Woodfibres 


• In heavy soils as structure improvement 

• Walking paths 

• Riding paths 

• Around the tree 


Composted Woodchips 



Size 

15-50 mm 

32

Green Roof Substrate 


Green Roof Substrate is an important component of a roof garden. The substrate ensures 

that the desired planting is able to grow on the roof. 

Broadly, Green Roof Substrate can be divided into extensive (mineral substrate, mostly for 

Sedum roofs) and intensive (thicker substrate layer for different plant and tree species) Green 

Roof Substrate. This we have sub-divided into a basic product, premium product, and an 

ecological product. 

The basis of each mixture is the correct nutritional value, for which we look at all the 

nutrients the plant needs. These can potentially be supplemented with additional fertilisers. 

The optimally tuned Green Roof Substrates ensure that every layer of vegetation receives 

appropriate nutrition. 

Advantages 

• Buffering and delayed draining of rainwater 

• Building insulation 

• Mitigation of heating of the city 

(Urban Heat Island effect) 

• Reduction of noise pollution 

• Reduction of CO 2 footprint 

• Enlarging bio-diversity 

• People feel better in a green environment 

• Green roofs contribute to a green, sustainable appearance 

• A green roof ensures a value increase of buildings and 

the neighbourhood 

• Extending the lifespan by resolving UV radiation 

33


Green Roof Substrate Extensive 

Green Roof Substrate Extensive is the substrate layer for extensive planting. Extensive green roofs are 

constructed of a substrate layer and a Sedum plantation (possibly supplemented with herbs and grasses). 

Sedum planting is exceptionally suitable for a roof, because these plants can store a lot of water, allowing 

them to cope with extended periods of drought. Thus a substrate layer of 50 to 150 mm will suffice, 

reducing the combined weight of the roof garden construction. Our roof garden substrate is certified 

and accompanied by the required laboratory analyses. Additionally, the substrate is suitable for export 

inside and outside Europe. We also offer the option of producing a customised roof garden substrate 

composition to your desired specification. Our production location is roofed, allowing us to consistently 

supply high-quality roof garden substrate. We can supply our roof garden substrates bagged, in bigbags, 

bulk, or blown, to your roof. 

Characteristics 


• Clean and free of weed 

• Optimal pore volume 

• Sufficient buffering of nutrients 


Extensive Basic Premium 

Dry weight 1110 kg/EN m 3 420 kg/EN m 3 

Saturated weight 1560 kg/EN m 3 850 kg/EN m 3 

Pore volume 56 % v/v 83 % v/v 

Max. water capacity 46 % v/v 43 % v/v 

Water permeability 21,9 mm/min 9,8 mm/min 

pH 6,2 6,8 

EC 14 mS/m 49 mS/m 

34


Green Roof Substrate Intensive 

Green Roof Substrate Intensive is the breeding ground for intensive planting. Intensive green roofs are 

constructed of a thicker substrate layer and greater plant diversity, such as trees, shrubs, perennials, and 

flower bulbs. In case of a semi-intensive roof garden, a substrate layer of about 150 mm is usually applied. 

For intensive roof gardens a thicker substrate layer of 150 to 700 mm is applied. For larger trees, a substrate 

layer of more than 700 mm is often required to provide appropriate rainwater buffering and anchoring of 

the tree. 

Our Green Roof Substrate is certified and accompanied by the required laboratory analyses. Additionally, 

the substrate is suitable for export inside and outside Europe. We also offer the option of producing a 

customised Green Roof Substrate composition to your desired specification. Our production location is 

roofed, allowing us to consistently supply high-quality Green Roof Substrate. We can supply our Green 

Roof Substrate bagged, in big-bags, bulk, or blown, to your roof. 




• Optimal pore volume 

• High organic matter for nutrient- and buffer capacity 

• High water capacity with good water permeability 


Intensive Basic Premium 






pH 6,2 6,6 


35


Green Roof Substrate Sedum Cultivation 

Specifically for the cultivation of Sedum, we offer two types of substrate; Sedum cultivation 

peat, and Sedum cultivation tray. The substrate Sedum cultivation peat is made for the 

cultivation of the Sedum mats. This substrate contains a high number of organic particles 

from the added high-quality RHP compost. This results in a higher and prolonged nutrition 

supply for the planting. The substrate Sedum cultivation tray is made for the cultivation of 

Sedum in trays, also known as clayettes. A thicker layer of substrate is applied here, which 

afterwards is placed onto the roof in its entirety, without additional substrate. The density 

when saturated is important in this process. 



• High organic matter content for nutrient- and 

buffer capacity 

• Good water capacity with optimum water permeability 


Sedum Cultivation Peat Tray 






pH 6,1 5,9 


36

Ground Covers 

French Bark (Pinus Maritima) 

Pinus Maritima (also called French Bark) is a high quality bark and it has a red-brown color. 

This sustainable bark has a long lifespan (approximately 4 to 6 years). Pinus Maritima is 

a decorative ground cover, suitable for many application areas. The tree bark creates an 

aesthetic appearance and it is used to limit the grow of weeds. 

Advantages 

• Weed repellent 

• Protects against frost 

• Prevents dehydration of the soil 

• 100% natural ground cover 

• Stability increasing layer because of its hard and 

solid structure 

• Nice colour (dark brown/terracotta) 

• Decomposes very slowly, lasts 4-6 years 


• Nurseries 


• Landscaping 

• Tree crowns 



French Bark (Pinus Maritima) 

Weed repellent 

min. 100 mm 

Free falling height < 3.000 mm (NEN-EN 1177) 

We supply the following types: 

Fraction 

Fraction 

10 - 20 mm 

20 - 40 mm 

37

Ground Covers 

Needle Bark (Pinus Sylvestis) 

Pinus Sylvestis (also called pine bark or conifer bark) is extremely suitable as a decorative 

ground cover and also as a fall- and play surface. It is a cheaper kind of bark and 

therefore it fits into most budgets. The life span of Needle Bark (approximately 3-4 years) 

compared to French bark (approximately 4 to 6 years) is considerably shorter. Needle tree 

bark is also an asset to any place, with its brown color and natural appearance. 

Advantages 

• Efficient maintenance 

• Protection against frost 

• Prevents dehydration of the soil 


• Modern image because of its light brown/red colour 

• Lasts 3 to 4 years 


• Decorative use 

• Gardens 


• Filter systems and bio filters 

• Playgrounds (fall protection) 

Avarage composition 

Needle Bark (Pinus Sylvestis) 

Layer thickness 50 - 100 mm 

(weed repellent min. 100 mm) 

Free falling height < 3.000 mm (NEN-EN 1177) 


Fraction 

Fraction 

Fraction 

Fraction 

Fraction 

0 - 20 mm 

10 - 20 mm 

10 - 35 mm 

20 - 40 mm 

20 - 50 mm 

38

Ground Covers 

Epicea Tree Bark 

Epicea Tree Bark is a pine bark consisting of various types of Pinus Epicea (spruces and 

larches) from the Belgian Ardennes. The tree bark has a lifespan of around 2 years. 

This is often used between ground covers which, after 2 years, have completely 

overgrown. Epicea Tree Bark composts faster than other tree bark types. 

Advantages 

• Shock absorbing and absorbent 

• Dark brown colour 

• Ideal for covering larger surfaces 

• Lifespan approx. two years 


• Flower boxes and borders 

• Animal houses 

• Garden paths 


Epica Tree bark 

Layer thickness 

50 - 100 mm 

(weed-resistant min. 100 mm) 

Free fall height < 3.000 mm (NEN-EN 1177) 


Fraction 

Fraction 

20 - 40 mm 

40 - 60 mm 

39

Ground Covers 

Douglas Tree Bark 

Douglas Tree Bark is a cork-like coniferous bark. The cork-like substance means that the 

Douglas tree bark forms a springy layer in the biofilter, to which the micro-organisms 

attach excellently. This bark’s firmness and durability falls in between the French maritime 

pine bark and inland bark. Douglas Tree Bark is more durable (lifespan of 8 to 15 years) 

than other tree bark types and is an excellent choice for sports floors and playgrounds. 

Advantages 

• Good shock absorption in playground equipment 

due to resilient layer 

• Micro organisms attach themselves perfectly 


• Modern appearance by red-brown colour 

• Lifespan 8-15 years 


• Filter systems and biofilters 


• Sports floors 


Douglas Tree Bark 


80 - 100 mm 

(Weed-resistant min. 100 mm) 

4-yearly application 



Fraction 

Fraction 

Fraction 

18 - 15 mm 

10 - 20 mm 

20 - 40 mm 

40

Ground Covers 

Sawmill chips 

Sawmill chips (also known as wood chips) are made of specially selected lumber types, 

for which no trees are cut down. Sawmill chips prolong the time it takes for the soil 

between the plants to dry out, and they keep weeds out of the garden in an environmentally 

friendly way. Furthermore, it provides a natural look, and stimulates increased 

biodiversity. We offer wood chips from both branches and trunks. 

Advantages 

• 100% natural ground cover/weed control 

• Free from harmful substances 

• Soil between your plants dries out less quickly 

• Reduction of soil erosion 

• Increase in biological activity and organic matter content 

• Natural appearance due to light brown colour 

• Very dry wood chips (between 5% and 15% moisture) 

• Without leaf 

• Lifespan approx. 4-5 years 


• Gardens 

• Riding schools 

• Animal houses 

• Hiking trails 



Sawmill chips 


> 75 mm 

(Weed-resistant min. 100 mm) 



Fraction 

Fraction 

5 - 30 mm 

15 - 50 mm 

41

Ground Covers 

Animal Bedding 

Animal Bedding can be applied in free-range barns. This product increases the comfort for 

cows. The animals can stand up more easily and become more limber, which increases their 

access to food. A cow that eats more has less chance of a low energy balance. 

Advantages 

• Increases the wellbeing of cows 

• Enriches the natural manure 

• Cheap alternative to sawdust and straw 

• Easy to use 


• Free-range barns 


Animal Bedding 



Nitrogen 

Phosphate 



5,0-7,0 kg/ton DM 

2,0-3,5 kg/ton DM 

3,0-6,0 kg/ton DM 

1,5-3,0 kg/ton DM 

pH 6,5-7,5 

EC 

0,8-2,0 mS/cm 

42

Ground Covers 

Lava 

Lava is the substance created during the eruption of a volcano and is the most fertile ground 

there is! In the soil, there is often a lack of sulphur, zinc, selenium, copper and cobalt, but with the 

use of Lava these deficiencies are replenished and as such it is a very suitable soil improver. Lava 

functions as a nutrients binder and an ion exchanger in the complex system of the exchange 

of nutrients between the soil and the plant roots. Lava grains are very light and porous, very 

suitable for potting soil or as a ground improver. The product lightens heavy soil in a special 

way for many years. Lava ensures better drainage. Lava is suitable for application in both civil 

engineering and cultural engineering and is available in various gradations. 

Advantages 

• Good water permeability and retaining capacity 

• Never a rotten mulch layer 

• Purifying capacity (filter) 

• Dynamic 

• Frost protection 

• Sound reducing 

• Conforms to German FFL-guidelines 


• Civil engineering and land development 

• Infiltration provisions (16-32) 

• Farming and horticulture 

• Sports fields (0-16) 

• Golf courts 


• (Riding) Stables 


Lava 

Weight 

Procter density 

Water permeability 

ca. 1.200-1.400 kg/m 3 (loosely poured) 

ca. 1,6 g/cm 

ca. 65 cm/s 

43


Airo-Tec ® Aeration System 

An Airo-Tec ® aeration system, together with a good habitat, is the best measure against 

roots coming up. In order to guarantee optimal oxygen supply, we advise applying aeration 

systems in both the Tree sand and the Tree granulate, consisting of impact resistant tubes 

with at least 40% surface perforation. 

The aeration tubes are enveloped in nylon 

stocking and are finished in the tree 

canopies with a round, steel lid. For hardened 

places a steel hinged lid (90 x 90 mm) 

Steel 

hinged cover 

Vertical 

aeration tube 

Horizontal 

aeration sleeve 

including filter stocking 

is recommended. The components of the 

Airo-Tec ® aeration systems are made of 

Steel 

lid 

around 

polyethylene. 

To sort out the dimensions of these systems 

you had best contact one of our advisors. 

Vertical 

venting tube 

including filter stocking 

PVC tee 

click system 

Horizontal 

aeration case 

PVC 90º bend 

click system 

Application when using 15m 3 growth medium 

Airo-Tec ® Aeration system 

Steel hinged cover 

BS180/2HD 

Aeration tube PE 80 mm, 

40% perforated, 

2,10 x 2,10 m impactresistant 

with two vertical 

tubes. To apply in heavily 

loaded situations. 

BS180/4HD 

Aeration tube PE 80 mm, 

40% perforated, 

2,10 x 2,10 m impactresistant 

with four 

vertical tubes. 

44


Airo-Tec ® Aeration pillar 

The Airo-Tec ® aeration pillar was developed to offer an aeration solution above ground, 

in places where regular covers of aeration systems for trees do not suffice. Consider for 

example, clogging lids, mowing damage to tubes and lids, or pollution from road grime. 

As the aeration holes of the Airo-Tec ® 

aeration pillar start at 50 centimetres above 

ground, they will not get clogged or damaged by abovementioned causes. 

In addition, the Airo-Tec ® aeration pillar can 

be used as a multi-functional separation 

for, for example, parking spaces, drive 

ways, pedestrian areas, land boundaries, 

etc. The Airo-Tec ® Aeration pillar is made of 

2 mm thick stainless steel, meaning it will 

withstand (minor) collisions and vandalism. 

The pillar is fitted with a large base plate 

that serves as a ground anchor, anchoring 

it firmly to the ground. For optimal air flow, 

aeration holes are fitted to both sides of the 

pole. 

The Airo-Tec ® aeration pillar can be modified 

to the customer’s wishes. For example, by 

making the aeration holes into the logo, 

or name of the customer, and the pole can 

be supplied in every desired RAL-colour 

(standard is stainless steel). General specification 

Airo-Tec ® pillar 

Size 

Size footplate 

1400 x 120 mm 

300 x 300 mm 

Dimension connection hole aeration tube 80 mm 

45


AquaTec Pouring edge 

The AquaTec Pouring edge is a water-supply system that contributes to an optimal water 

supply for your trees. Its standardised measures make it possible to accurately determine 

how much water is supplied. Can be supplied in various sizes and diameters. 

Advantages 

The advantages of the AquaTec Pouring edge, as 

compared to conventional systems, are: 

• Easy to install, sturdy, and continuously functional 

• Effective and efficient due to measured water supply 

• Reduces the water supply frequency 

• Less evaporation of soil moisture 

• The water penetrates the lump directly 

• Targeted water supply prevents flowing away (thus waste) 

of water 

• The water is dosed into the soil in measured amounts, 

reducing the amount of water used per time 

• The capacity of the water supply team is improved, 

because they only need to fill the pouring edge. 

No need to wait to add the water in measured amounts 

• Protects the tree from mowing damage 

• The improved water regime will reduce lots of leaf 

• An optional mulch, compost, or sand layer is kept in 

place by the AquaTec Pouring edge 

General specifications 

AquaTec Pouring edge 

• Liquid and solid fertilisers can be supplied directly 

Height 

260 mm 

into the AquaTec Pouring edge 

Colour Concrete Grey RAL 7023 

• Sleek design 

Material 

Lifespan 

Recycled HDPE (UV resistant) 

> 10 years 

46


AquaTec Water buffer 

In an AquaTec Water buffer, clean rainwater is buffered underneath the habitat of the 

trees, at a depth of 150 cm. It stores enough rainwater to supply the tree with sufficient 

(rain)water during dry periods. Excessive rainwater is infiltrated into the soil, or drained 

through the regular rainwater drainage system. 

The AquaTec Water buffer can be applied in the improvement of the habitats of existing 

city trees, and in the creation of habitats for new plantings. 

Advantages 

• Integral approach for the design of the public space. 

• Rainwater as a nutritional element instead of waste. 

• Improved functionality of trees in: capturing particulate matter, 

trapping CO 2 and evaporation, which combats the warming of the city. 

• In the event of a potential infiltration of excessive rainwater, it 

By combining durable water management 

with the optimisation of the habitat, the 

trees remain green longer, improving the 

decorative value of the trees, as well as their 

function in air-quality improvement. 

prevents the drying out of these inner-city areas. 

• Durable appearance to your residents. 

• Cheaper than regular solutions, because the water is used there 

where it falls. 

Anti-root cloth / separation layer of geotextile 

(pressure resistant > 1500 N, 

permeability> 1 mm/min) 

Rainwater supply from roofs 

of nearby buildings 

Hardening 

Street coat 

Growth site improvement 

with three granules or 

tree sand 

Apparent groundwater 

level 

Water buffer 

mv 

-20 

-40 

-60 

-80 

Infiltration 

Drainage sand 

15 cm + Ghg 

-100 

Ghg 

Waterproof foil 

Existing 

surface 

47

Biomass 

Biofuels & Bio Resources 

Biofuels 

Biofuels are used for energy generation. It 

is a sustainable alternative to fossil fuels. 

Of course, biofuels are free of pollution and 

available in various forms and gradations. 

We can deliver under NTA-8080 certification, 

which guarantees a sustainable origin of the 

wood. Suitable flows are selected by means of 

an accurately monitored collection process. The 

trimmings are separated from the other green 

flows and freed of pollution. Subsequently, the 

trimmings can be chipped or reduced into the 

fraction desired by the customer. 

Energetic applications for waste wood 

(Grade A and B) are combustion in a biomass plant, district heating and (industrial) heating applications with biomass 

for the generation of electricity and heat. It is also added in waste incineration plants, in order to the regulate the 

combustion process. 

Bio Resources 

Biomass as a bio resource is a very environmentally 

friendly choice. Bio resources are 

renewable and as good as CO 2 -neutral. 

The collected wood can in many cases, with 

or without intermediate processing, be used 

as a resource in the chipboard industry. 

As such, we give biomass a second life, so 

that the industry has to cut down fewer trees. 

Bio resources are supplied as fresh wood, but 

also as grade A and B wood in various fractions. 

48

Biomass 

Trunk-wood chips 

Trunk-wood Chips (wood chips) are made of tree trunk leftovers and thick branches. 

The leftovers are then chippered by a wood-chipper. Trunk-wood Chips can be used for 

generating energy or heat, for example in biomass plants. In addition, Trunk-wood Chips 

can be used as bio-materials or ground cover. 

Advantages 

• Environmental sound processing method 

• Continuously available 

• Homogeneous quality 

• Produced CO₂-neutral 

• Contributes to CO₂-reduction 


• Wood and chipboard industry 

• Pharmaceutical products 

• Sustainable packaging materials (paper and cardboard) 

• Clothing industry 

• Power plants 

• Company heaters 

• Wood stoves 


Trunk-wood Chips 

Size 

20 -100 mm 

Dry matter 45 - 75 % 

Ash < 5 % 

Heating Value 

9.000 kJ / kg 

49

Biomass 

Pruning-wood chips 

Pruning-wood Chips (wood chips) are made of leftovers from pruned/pollarded trees. The 

leftovers are then chippered by a wood-chipper. Pruning-wood Chips can be used for 

generating energy or heat, for example in biomass plants. In addition, Pruning-wood Chips 

can be used as bio-materials or ground cover. 

Advantages 















Pruning-wood Chips 

Size 

20 -100 mm 


Ash < 5 % 

Heating Value 

9.000 kJ / kg 

50

Biomass 

Shreds 

Shreds are often made from roots and stumps. Shreds are pulled-apart bits, which means 

you can see the individual wood-fibres. The shreds are usually sieved to remove as much 

sand as possible. 

Advantages 














Gemiddelde samenstelling 

Shreds 

Size 

20 - 100 to 20 - 300 mm 


Ash < 15 % 

Heating Value 

7.000 kJ / kg 

51

Biomass 

Screen overflow 

The wood-like fraction that remains after sieving compost, after composting, is called 

screen overflow. Screen overflow is used to generate energy. It has a dark brown to black 

colour. 

Advantages 











Screen overflow 

Size 

20 -250 mm 


Ash < 20 % 

Heating Value 

5.500 kJ / kg 

52

Biomass 

A-wood Chips 

The concept of A-wood is used to indicate clean and untreated wood. This wood can be 

re-used in the particle board industry. But it can also be used to make wood-pellets. 

Advantages 















A-wood Chips 

Size 

20 -100 mm 

Dry matter 80 % 

Ash 4 % 

Heating Value 

13.000 kJ / kg 

53

Biomass 

B-wood Chips 

The concept of B-wood is used to indicate painted, lacquered, or glued wood. This wood 

can be recycled as a secondary energy source. 

Advantages 















B-wood Chips 

Size 

20 -100 mm 

Dry matter 80 % 

Ash 4 % 

Heating Value 

13.000 kJ / kg 

54

Biomass 

Biofilter materials 

Biofilter material (also called just biofilter) is a collective name for those organic products 

that are successfully used in air purification installations where ‘odour’ is concerned. Our 

society sets high demands for our living environment. This concerns odour, air purification, 

and other harmful substances. We are manufacturers of biofilter material for organic odour 

treatment in a specific mixing ratio, or in different layers. The air to be purified is forced 

through the biofilter material, where micro-organisms remove undesirable odours. 

In the production of biofilter material, the focus is on a large contact-surface at as low an 

air-resistance as possible. The biofilter material should be neither too fine nor too coarse, 

the air should be evenly divided over the filter. We supply biofilter material made of, among 

other things, torn root-wood and tree bark. 

But also mixtures, or other customer-specific biofilter materials, can be made ‘to measure’ 

by us. The different products can be used individually or in any combination, to create the 

best possible result in any specific situation. Because we work together with permanent 

partners, we can also install the entire biofilter installation for you. 

Advantages 

• High density 

• Good water retention capacity 

• Large surface for micro-organisms 

• Good balanced supply of nutrients 

• Low filter resistance 

• Good absorbent properties 

• Tool life up to 5 years possible 


• Biofilters 

55

Biomass 

Torn root-wood 

Torn root-wood is very suitable as a biofilter material and is produced from various large 

indigenous tree stubs. Root-wood is supplied in the requested fraction, optional for the 

air quantity, and the characteristics of the processed air. Often fitted as a combination 

of particles, or used as an airflow layer with a low density, underneath other biofilter 

materials. By using root-wood, we ensure maximisation of the lifespan of the biofilter. 

The fibre-like structure of the torn root-wood contributes to an optimal habitat for 

bacteria (biotope). 


• Adaption speed 4-6 weeks 

• Various fractions available 

• Long lifespan 


Torn root-wood 

Fraction(s) 

40 - 80 / 40 - 250 / 40 - 400 mm 

Density - 

Moisture content < 40 % 

56

Biomass 

Tree bark 

Maritime Tree bark (French Maritime Pine) has a long lifespan, thanks to its hard structure, 

and is thereby exceptionally suitable as biofilter material. In addition, Pin Sylvester tree 

bark (Scots Pine) and Douglas tree bark are also suitable as biofilter materials. We will 

gladly advise you on what fraction(s) are most suitable for your biofilter. 


• Adaption speed 4-6 weeks 

• Various fractions available 

• Long lifespan 


Tree bark 

Size 

40 - 400 mm 

Density 300 to 400 kg/m 3 

Moisture content < 50 % 

57

Biomass 

BioBased Prototypes 

Our soil is degrading and fossil fuels and energy resources will shortly be exhausted. 

Together we are responsible for this situation, but together we can also turn it around. 

A new approach is required, because we have a responsibility to pass a viable earth on to 

the next generation. To improve our own contributing value, in the coming years we will 

make significant investments in the production and supply of BioBased prototypes. 

The BioBased prototypes are based on (bio)polymer and (agro-)waste flows, such as 

(roadside) grass, natural grass, natural fibres, water plants, pepper/tomato stalks, and 

sugar beets pulp, which is normally turned into yeast or composted. 

Biomass is, as a Bio(Based) material, a very environmentally friendly choice: renewable, 

and practically CO 2 -neutral. Bio(Based) materials can be supplied as wood and grass 

fibres (whether or not in pellet form), but also as A and B-wood in various fractions. 

The collected wood can, in most cases, with or without intermediate steps, be used as 

Bio(Based) material in, for example, the particle board industry. This way we give biomass 

a second life, so that less trees get cut down by the industry. There is plenty of annual 

supply of this material! 

We produce and market the following 

BioBased prototypes together with 

PaperWise and Millvision:: 

• Garden bench 

• Fences 

• Copying and letter paper 

58

Biomass 

Garden bench 

The garden bench consists of thermoplastic biocomposite. Thermoplastic bio-composites 

are plastics filled with short fibres, or combinations of plastic and tissues or ‘non-wovens’. 

The piles/beams measure 100 x 100 mm and can be produced in lengths up to 4 metres. 

The benches are two metres wide. They have a greenish colour, with a brownish back-rest. 

The colour greys over time. 

Advantages 

• Produced with 100% green energy - CO 2 -neutral 

• Meets the highest quality standards 

• Longer life span 

• 100% recyclable 


• Public space 

• Nature reserves 

• Recreation 

59

Biomass 

Fences 

The fence posts consist of thermoplastic biocomposite. Thermoplastic bio-composites 

are plastics filled with short fibres, or combinations of plastic and tissues or ‘non-wovens’. 

The piles/beams measure 100 x 100 mm and can be produced in lengths up to 4 metres. 

Advantages 



• 100% recyclable 


• Livestock farming 

• Hobby market 

60

Biomass 

Copying- and letter paper 

The copying and letter paper is produced in A4, A3 and rolls, with a weight of 75 to 

about 260 g/m 2 . The minimum purchase is one box of 1.5 kg. Glass fibres/agricultural 

waste are used to make this. 

Advantages 



• Up to 7 times recyclable 

• Environmental impact 47% lower compared to FSC paper 

made of wood fibres 

• Environmental impact 29% lower compared to recycled 

paper of wood fibres 

• Printing quality just as good as traditional paper of wood 

fibres 


• Business / Office 

• Education 

61

Organic Fertilizers 


FERM O FEED, part of DEN OUDEN GROEP, distinguishes itself by producing a large 

product assortment of Organic Fertilizers, to meet the needs of any cultivation. 

The Organic fertilizers are obtained by a unique and completely automated production 

process that is closely inspected by the Dutch veterinary service. The Organic fertilizers 

find their way to over 70 countries. The expansive assortment consists of organic fertilizers, 

organic fertilizers for organic cultivation, organic-mineral fertilizers, organic composite 

fertilizers and liquid fertilizers. 

Our products are sustainable and an easy solution to the worldwide food problem: organic 

fertilizers provide the extra care that our soil and our planet need to stay healthy and fertile. 

Do you want more information about our products? 

Visit our website www.fermofeed.com or request the expansive product cataloque via 

info@fermofeed.com. 

We work with the following 

Dutch distributors: 

Wesemael 

Harm-Jan Riemens 

Accountmanager Agriculture 

T +31 (0)6 22 69 23 88 

E riemens@wesemael.nl 

Brinkman 

Jaap Lubbersen 

Productspecialist Fertilizers 

T +31 (0)174 44 63 15 

E jaap.lubbersen@brinkman.nl 

62


The Fertiplus ® 


product family 

family 


product family 

family 

63

Certificates and quality marks 

ISO 

9001 

ISO 9001 

Quality 

ISO 

14001 

ISO 14001 

Environment 

VCA** 

VCA* en VCA** 

Safety 

Performance Ladder CO2 awareness certificate - level 5 

CO2 aware actions 

Parformance Ladder Social Entrepreneurship - level 3 

Social entrepreneurship 

BRL SIKB 9335-4 

Environmental hygienic 

quality label of composite soil products 

RAG-certificate 

Quality label for soil products 

in public green 

RHP-certificate 

Quality label for substrates, 

substrate raw materials 

NTA 8080 

Sustainable production of 

biomass 

Keurcompost certificate 

Environmental care and Product 

Verification for green compost 

BVOR-certificate ‘sick tree wood processing’ 

Processing company sick tree wood 

BVOR-certificate ‘recognised invasive exotics processor’ 

Processing company invasive exotics 

Control Union Certificaten 

Raw material regulations 

for organic fertilizers 

64

65

Contact 

1 

DEN OUDEN GROEP 

(Main office) 

Hermalen 7 

5481 XX Schijndel, The Netherlands 

Postadres: 

2 

3 

Production locations 

Location Vlagheide 

Vlagheide 6C, 5482 NM Schijndel 

The Netherlands 

Location Land van Cuijk 

Beijers Bos 2, 5443 PL Haps 

P.O. Box 12 

5480 AA Schijndel, The Netherlands 

4 


Location West-Brabant 

Rijksweg Noord 8, 4735 TX Zegge 

T +31 (0)73 543 10 00 

F +31 (0)73 549 83 60 

5 


Location De Peel/ROC 

Gerstdijk 6, 5704 RG Helmond 

E info@denoudengroep.com 

www.denoudengroep.com 

www.fermofeed.com 

www.bodac.nl 

6 

7 


Location Het Gooi 

Naarderstraatweg 6, 1399 VR Muiderberg 


Location Maasland 

Vliertwijksestraat 45A, 5244 NH Rosmalen 

8 


Location Kreekrak 

Westelijke Schelderijnweg 1A, 4411 TC Rilland 

9 


Location De Kempen (Poort 43) 

Pastoor P. Thijssenlaan 43, 6029 RL Sterksel 

10 


Location Parkstad Brunssum 

Waubacherweg 11, 6442 PW Brunssum 

Production locations 

(excl. collection of green residual flows) 

11 

12 


Location Belvédère Maastricht 

Industrieweg 4, 6219 NR Maastricht 


Location De Brabantse Wal 

Zonnekreekseweg 2, 4651 PM Steenbergen 

A 

B 

Location Heersjansdam 

Uilenvlietsehaven 1, 2995 DB Heerjansdam 


Location Drachten 

Tussendiepen 28, 9206 AD Drachten 

13 

14 


Location Midden-Limburg 

Kelperheide 26, 6037 SZ Kelpen-Oler 


Location Midden-Brabant 

Statendamweg 100, 4905 BP Oosterhout 



For the opening times of our branches: https://en.denoudengroep.com/contact/addresses 

Individuals and gardeners can contact our dealers: https://en.denoudengroep.com/dealers 

66

Contact 

4. Zegge 

3. Haps 2. Schijndel (Vlagheide) 1. Schijndel (Hoofdkantoor) 

5. Helmond 

6. Muiderberg 

6. Muiderberg 

8. Rilland 

9. Sterksel 

10. Brunssum 

11. Maastricht 

12. Steenbergen 13. Kelpen 

67

Infra 

Concrete roads 

Soil decontamination 

Explosive detection 

Collection of green waste flows 

Soil covering materials 

Soil improvement materials Biomass Organic fertilizers 

Naturally… 

www.denoudengroep.com

Brochure groen_GB_LR

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