Troubleshooting
Geranium sylvaticum problems — and how to fix them
Geranium sylvaticum (Geranium sylvaticum) 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
White powdery coating on leaves in late summer, worse in dry soil and poor air circulation. Cut affected foliage back hard; the plant flushes fresh, clean leaves.
Leaf scorch in dry sun
Crispy brown leaf margins where the plant bakes in hot, dry positions. Move to part shade or improve soil moisture and mulch.
Flopping after flowering
Stems sprawl and foliage looks tired once blooms fade. Shear the whole clump back by half to two-thirds for a tidy mound of new growth.
Vine weevil (in containers)
Notched leaf edges and sudden collapse from larvae eating roots. Inspect rootballs, use biological nematode controls, or grow in open ground where damage is rare.
Prevent geranium sylvaticum problems before they start
Most geranium sylvaticum issues are care-mismatch, not bad luck. Dial in the basics:
Geranium sylvaticum varieties: common problems
Looking for geranium sylvaticum in general rather than its problems? Read the full geranium sylvaticum care guide — light, water, soil and feeding.
Geranium sylvaticum problems — FAQ
Why is my geranium sylvaticum powdery mildew?
White powdery coating on leaves in late summer, worse in dry soil and poor air circulation. Cut affected foliage back hard; the plant flushes fresh, clean leaves.
Why is my geranium sylvaticum leaf scorch in dry sun?
Crispy brown leaf margins where the plant bakes in hot, dry positions. Move to part shade or improve soil moisture and mulch.
Why is my geranium sylvaticum flopping after flowering?
Stems sprawl and foliage looks tired once blooms fade. Shear the whole clump back by half to two-thirds for a tidy mound of new growth.
Why is my geranium sylvaticum vine weevil (in containers)?
Notched leaf edges and sudden collapse from larvae eating roots. Inspect rootballs, use biological nematode controls, or grow in open ground where damage is rare.