any of various plants that appear as first vegetation in burnt-over areas, esp rosebay willowherb
2. Also called: pilewort
a weedy North American plant, Erechtites hieracifolia, having small white or greenish flowers: family Asteraceae (composites)
3.
an Australian rainforest tree, Stenocarpus sinuatus, having whorls of bright red flowers
fireweed in American English
(ˈfaɪrˌwid)
US
noun
any of a number of plants that grow readily on cleared or burned-over land; esp., a species (Epilobium angustifolium) of willow herb, with purplish-red flowers