Troubleshooting
Oxlip problems — and how to fix them
Oxlip (Primula elatior) 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.
Vine weevil grub damage
Vine weevil larvae feed on Primula roots in late summer, causing sudden wilting and plant collapse. Inspect roots of wilting plants; apply biological nematode controls (Steinernema kraussei) in early autumn when soil is still warm.
Botrytis (grey mould) in cold, wet conditions
Grey mould can rot crowns and flower stems in cold, damp springs with poor air circulation. Remove dead foliage promptly in autumn, thin dense plantings, and avoid overhead watering.
Prevent oxlip problems before they start
Most oxlip issues are care-mismatch, not bad luck. Dial in the basics:
Oxlip problems — FAQ
Why is my oxlip vine weevil grub damage?
Vine weevil larvae feed on Primula roots in late summer, causing sudden wilting and plant collapse. Inspect roots of wilting plants; apply biological nematode controls (Steinernema kraussei) in early autumn when soil is still warm.
Why is my oxlip botrytis (grey mould) in cold, wet conditions?
Grey mould can rot crowns and flower stems in cold, damp springs with poor air circulation. Remove dead foliage promptly in autumn, thin dense plantings, and avoid overhead watering.