Clusterspike False Indigo
Amorpha herbacea
Last reviewed: June 2026
Light
full sun
Water
low
Size
12"–36" H × 12"–24" W
Bloom
May, Jun, Jul
Native to
AL, FL, GA, NC and 1 more states
Pollinators
bees, butterflies
Clusterspike false indigo is a compact native perennial that produces distinctive upright spikes of small purple flowers from May through July. This drought-tolerant plant forms neat clumps and goes dormant in winter, returning reliably each spring with fresh growth.
In an HOA neighborhood
Clusterspike False Indigo is an HOA-friendly choice. Maintenance level: low. Tidiness: 4 out of 5.
Works well in: front yard, foundation, street edge, mid zone.
- Dies back completely in winter
Wildlife value
The flowers attract native bees and butterflies during the extended summer bloom period. As a legume, it also helps fix nitrogen in the soil naturally.
Common questions
- How much sun does Clusterspike False Indigo need?
- Clusterspike False Indigo grows best in full sun conditions.
- When does Clusterspike False Indigo bloom?
- Clusterspike False Indigo blooms in May, June, and July.
- Where is Clusterspike False Indigo native?
- Clusterspike False Indigo (Amorpha herbacea) is native to AL, FL, GA, NC and 1 more states, per the USDA PLANTS Database and regional native plant society lists.
- What pollinators does Clusterspike False Indigo attract?
- Clusterspike False Indigo draws bees and butterflies.
- Is Clusterspike False Indigo HOA-friendly?
- Clusterspike False Indigo is generally an HOA-friendly choice in the right placement, with low maintenance.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Ready to grow Clusterspike False Indigo? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
Not sure where to start? Take the 2-minute yard quiz