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Wasowski, Sally and Andy
Amorpha nana Nutt.
Dwarf false indigo, Fragrant indigo-bush, Fragrant false indigo, Dwarf wild indigo
USDA Symbol: AMNA
USDA Native Status: Native to U.S.
Fragrant indigo-bush is a low-growing shrub, 1-3 ft. tall. Its finely textured, pinnately compound foliage gives a cloud-like appearance. Dense, terminal racemes of purple, pea-like flowers with showy, orange anthers are showcased against the bright-green leaflets.
The genus name, from the Greek amorphos (formless or deformed), alludes to the fact that the flower, with only a single petal (the banner or standard), is unlike the typical pea flowers of the family.
Bloom InformationBloom Color: Purple
Bloom Time: May , Jun , Jul
CO , IA , KS , MN , ND , NE , NM , OK , SD Canada: MB Native Distribution:
S. Man. to IA, w. to Sask. & NM Native Habitat:
Dry prairies; rocky hillsides USDA Native Status: L48(N), CAN(N)
Growing ConditionsLight Requirement: Sun , Part Shade , Shade
Soil Moisture: Dry , Moist
Soil Description: Rocky or sandy soils.
BenefitConspicuous Flowers: yes
Propagation is possible by seed. Seedlings are slow-growing. Seed Collection:
Extraction of seeds from the pod
is not necessary as the pods do not inhibit germination. Seed Treatment:
If seeds are stored, a 10-minute, hot water soak will improve germination. Moist stratification for three weeks at 40 degrees may also improve germination. Commercially Avail:
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Record Modified: 2009-02-19
Research By: TWC Staff