American Burnweed
Scientific Name: Erechtites hieraciifolius
Also Known As: Fireweed
Weed Family: Asteraceae


Robust summer annual with erect, smooth to hairy stems to 8 ft. (2.5 m) tall. Stems solid with white pith, large plants branched above midpoint. Has short fat taproots, often with many adventitious prop roots. Leaves alternate, spiraling, elliptic to lance shaped with narrow, sharp-pointed bases on lower part of stem and clasping bases on upper part of stem. Leaf margins lobed or unlobed, unevenly toothed (serrate); midrib white. Flowers white to pinkish. Seeds with many white hairs at the top. May produce a rank odor when cut or crushed. Found in almost any disturbed area and frequently in pastures and roadsides, especially following fire. Propagates by seed.

Herbicide Use

Postemergence control with repeat applications of mixtures of 2,4-D, carfentrazone, dicamba, MCPP, MCPA and/or sulfentrazone. Other postemergence options include triclopyr alone or combined with 2,4-D. Check the herbicide label for specific application rates and turfgrass tolerance before use.


Germination Dates