Troubleshooting
Selfheal problems — and how to fix them
Selfheal (Prunella vulgaris) 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.
Lawn-weed status
Selfheal is a persistent, low-growing lawn weed; mowing does not eliminate it as the plant flowers below mower height — hand removal with a daisy grubber or selective broadleaf herbicides are needed in formal turf.
Powdery mildew in dry conditions
White powdery coating may develop on foliage during dry summers, especially when growing in partial shade; mulch to retain soil moisture and improve air circulation.
Prevent selfheal problems before they start
Most selfheal issues are care-mismatch, not bad luck. Dial in the basics:
Selfheal problems — FAQ
Why is my selfheal lawn-weed status?
Selfheal is a persistent, low-growing lawn weed; mowing does not eliminate it as the plant flowers below mower height — hand removal with a daisy grubber or selective broadleaf herbicides are needed in formal turf.
Why is my selfheal powdery mildew in dry conditions?
White powdery coating may develop on foliage during dry summers, especially when growing in partial shade; mulch to retain soil moisture and improve air circulation.