Plant Wiki

The open plant encyclopedia

Know any plant.
Grow it well.

Snap a photo or search by any name to see how to care for it, where it comes from, whether it's safe, and a 3D model you can turn.

  • 13,000+plants with full pages
  • 365,000+plant species worldwide
  • 220+countries covered

Common in

See all

The plants people record most in your country, and ones that grow there wild.

What do you want to do?

Popular plants

Browse all plants

See them in 3D

All plants in 3D

Browse plants

Filter by what you want to do, shape, origin, country, care and safety.

Plant Wiki › Browse plants

Showy rattlebox

Crotalaria spectabilis

Also called Rattlebox, Showy Crotalaria, Showy Rattlepod, Silent Rattlepod, Rattle Box

Showy rattlebox
Photo: Dinesh Valke from Thane, India, CC BY-SA 2.0

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.

Other Crotalaria plants

Birdflower · Sunn hemp · Birdflower · Longbeak rattlebox · Smooth rattlebox · Rattleweed

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.

Credits & terms

Identify a plant

Point at a leaf or flower and snap. One plant in frame works best.

Your photo
Starting camera…