Troubleshooting
Indian Shot problems — and how to fix them
Indian Shot (Canna indica) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Canna leaf roller
Caterpillars roll and feed inside leaves. Unroll affected leaves and remove larvae; apply Bacillus thuringiensis for persistent infestations.
Rust fungus
Orange powdery pustules on leaf undersides indicate Canna rust. Remove infected leaves, improve air circulation, and apply a copper-based fungicide.
Rhizome rot in winter
In cool climates, rhizomes left in wet soil over winter often rot. Lift, dry, and store in dry compost in a frost-free location.
Aphids
Colonies form on young shoots and flower buds. Knock off with a strong water jet or apply insecticidal soap.
Prevent indian shot problems before they start
Most indian shot issues are care-mismatch, not bad luck. Dial in the basics:
Indian Shot problems — FAQ
Why is my indian shot canna leaf roller?
Caterpillars roll and feed inside leaves. Unroll affected leaves and remove larvae; apply Bacillus thuringiensis for persistent infestations.
Why is my indian shot rust fungus?
Orange powdery pustules on leaf undersides indicate Canna rust. Remove infected leaves, improve air circulation, and apply a copper-based fungicide.
Why is my indian shot rhizome rot in winter?
In cool climates, rhizomes left in wet soil over winter often rot. Lift, dry, and store in dry compost in a frost-free location.
Why is my indian shot aphids?
Colonies form on young shoots and flower buds. Knock off with a strong water jet or apply insecticidal soap.