Troubleshooting
Hedge Woundwort problems — and how to fix them
Hedge Woundwort (Stachys sylvatica) 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.
Powdery mildew
Common in dry conditions or crowded plantings; improve air circulation and avoid wetting foliage; affected leaves can be removed.
Invasive spread
Rhizomes and prolific self-seeding can make it invasive in borders; remove seed heads before they ripen and divide every 2–3 years to keep in check.
Slugs and snails
Young spring shoots are targeted by slugs; use copper barriers or biological nematode controls in susceptible gardens.
Prevent hedge woundwort problems before they start
Most hedge woundwort issues are care-mismatch, not bad luck. Dial in the basics:
Hedge Woundwort problems — FAQ
Why is my hedge woundwort powdery mildew?
Common in dry conditions or crowded plantings; improve air circulation and avoid wetting foliage; affected leaves can be removed.
Why is my hedge woundwort invasive spread?
Rhizomes and prolific self-seeding can make it invasive in borders; remove seed heads before they ripen and divide every 2–3 years to keep in check.
Why is my hedge woundwort slugs and snails?
Young spring shoots are targeted by slugs; use copper barriers or biological nematode controls in susceptible gardens.