Prairie thermopsis is a perennial legume native to the Great Plains and lower Rocky Mountain canyons, grown for its yellow spring flowers. It thrives in full sun, well-drained soil and dry conditions once established.
Family
Fabaceae (Pea & bean family)
Grows as
Perennial
Light
Full sun
Water
Water deeply but infrequently, letting the soil dry between waterings; it tolerates drought once established.
Soil
Well-drained, sandy or loamy soil; tolerates poor and alkaline soils.
Temperature
Hardy in cold winters; comfortable in typical temperate ranges, protect young plants from prolonged waterlogging.
How easy
Easy
Safety
Toxic: Seeds and other parts contain toxic alkaloids (cytisine-type quinolizidine alkaloids) that can cause nausea, vomiting and more serious effects if eaten in quantity.
Native range
Canada to WC. & C. U.S.A.
Climate
temperate
About
Thermopsis rhombifolia, also known as prairie thermopsis, is a species of flowering plant in the legume family. It is native to North America, where it is found in the Great Plains, with extensions into the lower canyons of the Rocky Mountains. Its natural habitat is dry grasslands and woodlands.
It is a perennial herb that produces yellow flowers in the spring.
Text excerpted from the Wikipedia article Thermopsis rhombifolia 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.