Troubleshooting
Curled Dock problems — and how to fix them
Curled Dock (Rumex crispus) 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.
Persistent taproot regrowth
Even small root fragments left in soil after digging regenerate into new plants; remove the entire taproot with a long-bladed weeding tool, working when soil is moist; repeat treatment is nearly always necessary.
Prolific seeding
A single plant can produce 60,000 seeds annually that remain viable in soil for over 50 years; cut seed stalks before they ripen (when still green) to prevent soil seed-bank build-up.
Dock sawfly (Ametastegia glabrata)
Pale green larvae of the dock sawfly feed on leaves in summer, skeletonising them; infestations on wild plants are usually tolerated as they rarely threaten plant survival, but hand-pick larvae on managed plots.
Prevent curled dock problems before they start
Most curled dock issues are care-mismatch, not bad luck. Dial in the basics:
Curled Dock problems — FAQ
Why is my curled dock persistent taproot regrowth?
Even small root fragments left in soil after digging regenerate into new plants; remove the entire taproot with a long-bladed weeding tool, working when soil is moist; repeat treatment is nearly always necessary.
Why is my curled dock prolific seeding?
A single plant can produce 60,000 seeds annually that remain viable in soil for over 50 years; cut seed stalks before they ripen (when still green) to prevent soil seed-bank build-up.
Why is my curled dock dock sawfly (ametastegia glabrata)?
Pale green larvae of the dock sawfly feed on leaves in summer, skeletonising them; infestations on wild plants are usually tolerated as they rarely threaten plant survival, but hand-pick larvae on managed plots.