Troubleshooting
Peruvian Canna problems — and how to fix them
Peruvian Canna (Canna iridiflora) 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.
Wind shredding
The enormous leaves tear badly in exposed sites. Plant in a sheltered position or use as a backdrop against a wall or fence.
Canna leaf roller
Tortricid moth caterpillars roll and shelter inside leaves. Open rolled leaves, remove larvae by hand, or apply Bacillus thuringiensis.
Slugs and snails
Young emerging shoots are targeted. Apply iron phosphate pellets around the base or use copper tape barriers on containers.
Rhizome rot
Poorly drained or waterlogged soil causes rhizome rot. Ensure drainage is excellent and lift rhizomes before frost in cooler zones.
Prevent peruvian canna problems before they start
Most peruvian canna issues are care-mismatch, not bad luck. Dial in the basics:
Peruvian Canna problems — FAQ
Why is my peruvian canna wind shredding?
The enormous leaves tear badly in exposed sites. Plant in a sheltered position or use as a backdrop against a wall or fence.
Why is my peruvian canna canna leaf roller?
Tortricid moth caterpillars roll and shelter inside leaves. Open rolled leaves, remove larvae by hand, or apply Bacillus thuringiensis.
Why is my peruvian canna slugs and snails?
Young emerging shoots are targeted. Apply iron phosphate pellets around the base or use copper tape barriers on containers.
Why is my peruvian canna rhizome rot?
Poorly drained or waterlogged soil causes rhizome rot. Ensure drainage is excellent and lift rhizomes before frost in cooler zones.