Troubleshooting
Marsh Woundwort problems — and how to fix them
Marsh Woundwort (Stachys palustris) 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.
Aggressive rhizome spread
The plant sends out far-reaching underground stolons and can quickly overwhelm smaller neighbours; plant in a sunken rhizome barrier, a bottomless container, or divide and thin every 2 years.
Leaf miner damage (Amauromyza morionella)
The larvae of this Agromyzid fly create pale linear then blotch mines in the leaves; damage is cosmetic and rarely severe, but affected leaves should be removed to prevent population build-up.
Prevent marsh woundwort problems before they start
Most marsh woundwort issues are care-mismatch, not bad luck. Dial in the basics:
Marsh Woundwort problems — FAQ
Why is my marsh woundwort aggressive rhizome spread?
The plant sends out far-reaching underground stolons and can quickly overwhelm smaller neighbours; plant in a sunken rhizome barrier, a bottomless container, or divide and thin every 2 years.
Why is my marsh woundwort leaf miner damage (amauromyza morionella)?
The larvae of this Agromyzid fly create pale linear then blotch mines in the leaves; damage is cosmetic and rarely severe, but affected leaves should be removed to prevent population build-up.