Troubleshooting
Corsican Heron's Bill problems — and how to fix them
Corsican Heron's Bill (Erodium corsicum) 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.
Crown rot in wet winters
The most common cause of plant loss; ensure perfectly sharp drainage and apply a grit collar around the crown; consider an open cloche in prolonged wet spells.
Vine weevil
Larvae eat roots undetected until plants collapse; use nematode biocontrol (Steinernema kraussei) in autumn and avoid mulching with organic material near the crown.
Prevent corsican heron's bill problems before they start
Most corsican heron's bill issues are care-mismatch, not bad luck. Dial in the basics:
Looking for corsican heron's bill in general rather than its problems? Read the full corsican heron's bill care guide — light, water, soil and feeding.
Corsican Heron's Bill problems — FAQ
Why is my corsican heron's bill crown rot in wet winters?
The most common cause of plant loss; ensure perfectly sharp drainage and apply a grit collar around the crown; consider an open cloche in prolonged wet spells.
Why is my corsican heron's bill vine weevil?
Larvae eat roots undetected until plants collapse; use nematode biocontrol (Steinernema kraussei) in autumn and avoid mulching with organic material near the crown.