Poisonbean is a medium-sized perennial shrub native to the southeastern United States, grown mainly in gardens and wild edges rather than as a houseplant. It likes moist soil and a sunny spot, and it dies back in cold weather and regrows from the base.
Family
Fabaceae (Pea & bean family)
Grows as
Shrub, Perennial
Light
Full sun
Water
Keep soil moist, especially during dry spells and in the first season after planting.
Soil
Average garden soil; tolerates wet, clay or sandy soils.
Temperature
Hardy in warm temperate climates; cold-hardy to about -10 °C, dying back in winter.
How easy
Easy
Safety
Toxic: Seeds and pods contain toxic compounds and are harmful if eaten.
Native range
SE. U.S.A. to NE. Mexico, El Salvador
Climate
temperate
About
Sesbania drummondii, known as poisonbean, rattlebox and rattlebush, is a medium-sized perennial shrub in the legume family Fabaceae. It is native to the southeastern United States, from Texas east to Florida.
These woody-based shrubs grow from 1–3 metres (3.3–9.8 ft) tall. It is usually much branched in the upper portion. Branches are thin and widely spreading. The medium green leaves are alternate, deciduous, and pinnately compound. There are typically 12-24 leaflets, and occasionally as many as 60 are found. Each leaflet is oblong shaped and 2–3 centimetres (0.79–1.18 in) long. The orange-yellow, pea-like flowers occur in a drooping raceme on a long stem. They are often found with red lining. The seed pods are four-sided, four-winged, and about 10 centimetres (3.9 in) long. The peas rattle inside, giving this plant its common name of Rattlebush.
Text excerpted from the Wikipedia article Sesbania drummondii 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.