Report to the Republic of Palau: 2008 update on Invasive Plant ...

All states
Recommendations by State
The following recommendations apply <strong>to</strong> all states:
Scientific Name Common name Comments and recommendations
Clerodendrum
quadriloculare
Clidemia hirta
kleuang, bronze-leaved
clerodendrum
kúi, Koster’s curse
Dieffenbachia seguine dieffenbachia
Dissotis rotundifolia
Epipremnum
pinnatum ‘Aureum’
Imperata cylindrica
Merremia peltata
Mikania micrantha
Spathodea
campanulata
Sphagneticola
[=Wedelia] trilobata
Syngonium
angustatum
Tradescantia
spathacea
Tradescantia zebrina
dissotis, pink lady
pothos
kasoring, cogon grass
kebeas, merremia
teb el yas, mile-a-minute
weed
orsachel kui, African tulip
tree
ngesil ra ngebard,
Singapore daisy
arrowhead plant
Discourage fur<strong>the</strong>r planting; eradicate outside <strong>of</strong> urban areas, assist
landowners in destroying and disposing <strong>of</strong> unwanted plants.
<strong>Report</strong> occurrences outside <strong>the</strong> generally infested area <strong>to</strong> Bureau <strong>of</strong>
Agriculture for eradication.
Control outside <strong>of</strong> cultivation, especially in moist areas.
Discontinue planting; discourage dumping <strong>of</strong> garden waste; control escaped
populations as needed.
Control outside <strong>of</strong> cultivation, especially in forested areas.
<strong>Report</strong> occurrences outside <strong>the</strong> known infestations <strong>to</strong> Bureau <strong>of</strong> Agriculture for
eradication.
Work with Koror and Babeldaob States <strong>to</strong> evaluate control measures that can
be used by landowners
<strong>Report</strong> occurrences <strong>to</strong> Bureau <strong>of</strong> Agriculture for eradication.
Remove existing trees and report new occurrences <strong>to</strong> Bureau <strong>of</strong> Agriculture.
Discontinue planting; discourage dumping <strong>of</strong> garden waste; control escaped
populations as needed.
Control outside <strong>of</strong> cultivation, especially in forested areas.
Discontinue planting; discourage dumping <strong>of</strong> garden waste; control escaped
kobesos, Moses in a boat
populations as needed.
Discontinue planting; discourage dumping <strong>of</strong> garden waste; control escaped
wandering jew
populations as needed.
Discourage dumping <strong>of</strong> garden waste and cuttings. Many tropical species can reproduce
vegetatively and dumping <strong>of</strong> garden waste can spread <strong>the</strong>m <strong>to</strong> new areas.
Infrequent mowing or slashing may just spread weed species that reproduce vegetatively,
including Dissotis rotundifolia, Tradescantia spathacea, Tradescantia zebrina and Wedelia
trilobata.
Limit burning and extinguish wildfires promptly. Fire destroys many native species, which are
not well adapted <strong>to</strong> fire, and favors invasive species, many <strong>of</strong> which are fire-resistant, firepromoting
or are pioneer species that do well on burned sites. Burning favors invasive species
by reducing competition, exposing mineral soil and destroying organic matter, making it difficult
for native species <strong>to</strong> become re-established. Fire can promote <strong>the</strong> reproduction <strong>of</strong> fire-adapted
species, such as Acacia auriculiformis (earleaf acacia), Arundo donax (giant reed), Chromolaena
odorata (ngesngesil, chromolaena, Siam weed), Imperata cylindrica (kasoring, cogon grass),
Melaleuca quinquenervia (cajeput, paper bark tree), Melinis minutiflora (molasses grass),
Panicum maximum (Guinea grass) and Pennisetum polystachion (desum, mission grass).
Establishment <strong>of</strong> <strong>the</strong>se species (and extirpation <strong>of</strong> native species) can fuel additional fires,
leading <strong>to</strong> a destructive fire cycle.
Disturbance, removal <strong>of</strong> competition and <strong>the</strong> exposure <strong>of</strong> mineral soil favor many invasive
species. Undisturbed ecosystems are much more resistant <strong>to</strong> invasion. Limiting roadbuilding,
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