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Desert false indigo

Amorpha fruticosa

Also called False Indigo, Bastard Indigo, Tall Indigo Bush, Bastard False Indigo, Bastard Indigo Bush, Indigo Bush, Shrubby False Indigo

Desert false indigo
Photo: Dalgial, CC BY-SA 3.0

Desert false indigo is a large, thornless, deciduous shrub native to the United States and northern Mexico, grown for its spiky purple flowers and tolerance of wet or dry sites. It is easy to grow in most sunny spots and spreads readily by suckers and seed.

Family
Fabaceae (Pea & bean family)
Grows as
Shrub
Light
Full sun, Part shade
Water
Water regularly while establishing, then tolerates dry spells; it copes with both moist and dry soil once mature.
Soil
Almost any soil, including poor, sandy, clay or alkaline ground; good drainage preferred.
Temperature
Hardy in cold winters; protect young plants from severe frost.
How easy
Easy
Safety
Mildly toxic: Fruits and other parts contain rotenoids and related compounds that can be harmful if eaten in quantity, so keep seed pods out of reach of children.
Native range
U.S.A. to N. Mexico
Climate
temperate

About

Amorpha fruticosa is a species of flowering plant in the legume family Fabaceae, known by several common names, including desert false indigo, false indigo-bush, and bastard indigobush. It is native to North America.

Safety

6'-O-β-D-glucopyranosyl-12a-hydroxydalpanol, a rotenoid, can be found in the fruits of A. fruticosa. Several members of the amorfrutin class of compounds have been isolated from the fruits. Amorfrutins as well as other secondary metabolites from A. fruticosa have displayed favorable bioactivities counteracting diabetes and the metabolic syndrome.

Where it grows

The native range extends through much of the United States and south into Mexico. Its native habitats include stream and pond edges, open woods, roadsides and canyons.

Other Amorpha plants

California false indigo · False indigo

Text excerpted from the Wikipedia article Amorpha fruticosa 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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