Showy rattlebox is a fast-growing annual or short-lived perennial legume from South Asia and Southeast Asia, grown as a green manure and widely naturalized as a weed in tropical and subtropical regions. It is best kept in full sun and well-drained soil, and it is toxic to livestock.
Family
Fabaceae (Pea & bean family)
Grows as
Perennial
Light
Full sun
Water
Water regularly while young, then tolerate dry spells once established.
Soil
Well-drained, sandy or loamy soil; tolerates poor soil.
Temperature
18–32 °C; protect below 10 °C.
How easy
Easy
Safety
Toxic: Seeds and other parts contain pyrrolizidine alkaloids that can damage the liver if eaten.
Native range
Indian Subcontinent to Taiwan
Climate
seasonally dry tropical
About
Crotalaria spectabilis, the showy rattlebox or showy rattlepod, is a species of flowering plant in the pea family Fabaceae. It is native to the Indian Subcontinent, southern China, and Southeast Asia. It is a perennial herb that grows up to 0.6–1.5 m (24–59 in) tall. It grows in montane grasslands, along forest edges, and within meadows. It was introduced (originally as a green manure) to most of the world's tropics and subtropics and is now a serious agricultural pest species. It is toxic to livestock, causing liver damage.
Where it grows
Crotalaria spectabilis is insect pollinated and is recorded to have been visited in northern Florida by Lasioglossum apopkense.
Text excerpted from the Wikipedia article Crotalaria spectabilis 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.