Noun: 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
"giant willowherb quickly colonized the area after the forest fire";
- fireweed, rosebay willowherb, wickup, Epilobium angustifolium
Derived forms: giant willowherbs
Type of: willowherb
Part of: Epilobium, genus Epilobium