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Laennecia coulteri
Also called Coulter's Woolwort, Conyza
Coulter's horseweed is a wild annual herb in the daisy family, native to western North America and northern Mexico, usually found on disturbed ground and roadsides. It is a weedy wildflower rather than a garden plant, and it grows readily from seed in dry, open sites.
Laennecia coulteri, commonly known as Coulter's horseweed, is a plant in the family Asteraceae. It is native to western North America, including California, Nevada, Arizona, New Mexico, Utah, Colorado, Texas, and Northern Mexico. Laennecia coulteri is a herbaceous annual with glandular stems and leaves, generally growing to 3-5 feet tall. It blooms from April - November, depending on location. Often found in disturbed habitats, stream banks, washes, fields, and roadsides in sandy, clayey, or alkaline soils.
Text excerpted from the Wikipedia article Laennecia coulteri by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
