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Horseflyweed

Baptisia tinctoria

Also called Wild Indigo, Yellow Wild Indigo, Indigo Broom, Rattleweed, Yellow Broom, Yellow False Indigo, Horsefly Weed

Horseflyweed
Photo: Mason Brock (Masebrock), Public domain

Horseflyweed is a native North American wildflower in the pea family, valued in gardens for its silver-green foliage and yellow flower spikes. It is tough and drought tolerant, but its deep taproot makes it best left undisturbed once established.

Family
Fabaceae (Pea & bean family)
Grows as
Perennial
Light
Full sun, Part shade
Water
Water regularly while establishing, then rarely; it tolerates drought once mature.
Soil
Well-drained, sandy or average soil; tolerates poor soil.
Temperature
Hardy to about -35 °C; native to temperate climates.
How easy
Easy
Safety
Toxic: Seeds and other parts contain alkaloids (cytisine-type) and can cause nausea and vomiting if eaten.
Native range
SE. Canada to NC. & E. U.S.A.
Climate
temperate

About

Baptisia tinctoria (common names include yellow false indigo, wild indigo, wild-indigo and horseflyweed) is a herbaceous perennial plant in the family Fabaceae. It is native to eastern North America.

Where it grows

Baptisia tinctoria is found throughout the eastern United States, west to Minnesota, and south to Florida. As it is rare in some parts of its range, it is protected by some state authorities: in Kentucky it is threatened; in Maine it is considered endangered. It prefers dry meadow and open woodland environments.

Other Baptisia plants

Blue wild indigo · Wild indigo

Text excerpted from the Wikipedia article Baptisia tinctoria 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.

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