Description
Chamaenerion angustifolium, commonly known in North America as fireweed, in some parts of Canada as great willowherb, and in Britain as rosebay willowherb, is a perennial herbaceous plant in the willowherb family Onagraceae. It is also known by the synonyms Chamerion angustifolium and Epilobium angustifolium. is often abundant in wet calcareous to slightly acidic soils in open fields, pastures, and particularly burned-over lands. It is a pioneer species that quickly colonises open areas with little competition, such as the sites of forest fires and forest clearings.
