Troubleshooting
Dwarf Indigo Bush problems — and how to fix them
Dwarf Indigo Bush (Amorpha nana) is generally low-drama, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Crown rot in heavy or wet soils
Plants collapse at the crown within a single wet season when sited in clay or poorly drained ground; this is the most frequent cultivation failure. Only site in free-draining sandy or gravelly soil — there is no fungicide rescue once rot sets in.
Short lifespan and taproot sensitivity
Like many subshrubs of dry prairies, individual plants may be naturally short-lived (5–8 years); avoid transplanting after establishment as the taproot is easily damaged. Maintain a supply of seed-grown replacements.
Prevent dwarf indigo bush problems before they start
Most dwarf indigo bush issues are care-mismatch, not bad luck. Dial in the basics:
Dwarf Indigo Bush problems — FAQ
Why is my dwarf indigo bush crown rot in heavy or wet soils?
Plants collapse at the crown within a single wet season when sited in clay or poorly drained ground; this is the most frequent cultivation failure. Only site in free-draining sandy or gravelly soil — there is no fungicide rescue once rot sets in.
Why is my dwarf indigo bush short lifespan and taproot sensitivity?
Like many subshrubs of dry prairies, individual plants may be naturally short-lived (5–8 years); avoid transplanting after establishment as the taproot is easily damaged. Maintain a supply of seed-grown replacements.