We found 1 definitions of giant willowherb from 1 different sources.
Noun |
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giant willowherb - tall North American perennial with creeping rootstocks and narrow leaves and spikes of pinkish-purple flowers occurring in great abundance in burned-over areas or recent clearings; an important honey plant | ||
fireweed, rosebay willowherb, wickup, Epilobium angustifolium | ||
willowherb a plant of the genus Epilobium having pink or yellow flowers and seeds with silky hairs |