5.2 Perennials
5.2 Perennials
5.2 Perennials
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46<br />
PERENNIALS<br />
Dictamnus albus L.<br />
burning bush, gasplant, dittany, fraxinella, fraxinelle<br />
per. -50° to -21° C Jun 60-90 cm NP"<br />
Value for honey and pollen: useful to bridge the June gap.<br />
Notes: a favourite in the flower border of bygone days; purple flowers; full sun;<br />
aromatic leaves; foliage emits an ethereal inflammable oil.<br />
Doronicum plantagineum L.<br />
leopard's bane, plantain leopard's bane, doronic plantain<br />
per. -37° to -29° C May-Jun 120 cm NP 36<br />
Notes: yellow sunflower-like flowers; sturdy and of easy culture.<br />
Echinops exaltatus Schrad.<br />
Russian globe thistle, dchinope de Russie<br />
per. -37° to -29° C 90-360 cm<br />
Value for honey: considered equally attractive as E. sphaerocephalus (globe thistle) 35 .<br />
Notes: the best of any of the spp. in this genus for garden planting 95 ; compound blue<br />
flower-heads.<br />
Echinops ritro L.<br />
small globe thistle, boulette azurite, petite boulette<br />
per. -27° to -29° C 30-360 cm<br />
Value for honey: considered equally attractive as E. shaerocephalus (globe thistle), but<br />
is a more desirable ornamental.<br />
Notes: smaller than most globe thistles; bright blue compound flowers.<br />
Echinops sphaerocephalus L.<br />
globe thistle, Chapman honey plant, great globe thistle, boulette azurde, boulette<br />
commun<br />
per. -37° to -29° C mid Jul-end Aug 90-240 cm<br />
Value for honey: HP5 16 ; noted to be an excellent source in some areas 72 ; claimed to<br />
be very valuable for N when grown experimentally in Man. in the late 1940'0; also<br />
was grown on trail in N.Y. State by H. Chapman to prove its attractiveness (some<br />
observers contended that bees only idled on the blossoms and collected little N) 72 .<br />
Notes: grown as a forage crop in some countries; can be grown as a summer-time<br />
apiary hedge if it is supported by two wires (dead stems can be left in position as a<br />
winter windbreak) 35 ; sun and well-drained soil; may be listed in nursery catalogues, but<br />
other spp. may be offered under this name; naturalized in local areas of N. America;<br />
frequently cultivated and occasionally a volunteer plant on waste heaps, in fields and<br />
other waste places, s. Que. and beyond Can. limits 23 .<br />
Epilobium angustifolium L. 51<br />
(syn. Chamaenerion angustifolium (L.) Scop.; Epilobium spicatum Lam.) 51<br />
fireweed, rosebay willowherb, Indian pink, wickup, epilobe en dpi, osier de St. Antoine,<br />
Antionette<br />
per. -37° to-29° C Jul-Aug 2.5 m N(P)<br />
Value for honey: HP5/6 16 ; exceptional HP of 1000 kg/ha recorded 17 ; H yield of 25-57<br />
kg/colony/day 17 ; a 10 year average yield is likely to be a disappointing figure, since the<br />
N flow is not dependable from year to year 2 ; N flow is heaviest during the hot<br />
weather, when the air is clear, humid and still 17; N secretion is optimum at