Troubleshooting
Common Agrimony problems — and how to fix them
Common Agrimony (Agrimonia eupatoria) 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.
Aphids
Aphids occasionally colonise new growth in spring but are rarely damaging. Remove by hand or treat with insecticidal soap; avoid broad-spectrum insecticides to protect pollinators visiting the flowers.
Leaf caterpillar damage
Larvae of certain moth species may chew holes in leaves in summer. Damage is usually cosmetic; hand-pick caterpillars or accept minor damage on a wildlife-friendly plant.
Prevent common agrimony problems before they start
Most common agrimony issues are care-mismatch, not bad luck. Dial in the basics:
Common Agrimony problems — FAQ
Why is my common agrimony aphids?
Aphids occasionally colonise new growth in spring but are rarely damaging. Remove by hand or treat with insecticidal soap; avoid broad-spectrum insecticides to protect pollinators visiting the flowers.
Why is my common agrimony leaf caterpillar damage?
Larvae of certain moth species may chew holes in leaves in summer. Damage is usually cosmetic; hand-pick caterpillars or accept minor damage on a wildlife-friendly plant.