Troubleshooting
Allioni's Primrose problems — and how to fix them
Allioni's Primrose (Primula allionii) 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.
Winter wet and crown rot
The leading killer in cultivation; the plant must be grown in an alpine house or cold frame with overhead protection. Even a single prolonged wet episode in winter can destroy the cushion.
Vine weevil
Adult weevils notch leaf margins at night while larvae devour roots; inspect pot-grown plants regularly and treat with nematode drench (Steinernema kraussei) in late summer.
Prevent allioni's primrose problems before they start
Most allioni's primrose issues are care-mismatch, not bad luck. Dial in the basics:
Allioni's Primrose problems — FAQ
Why is my allioni's primrose winter wet and crown rot?
The leading killer in cultivation; the plant must be grown in an alpine house or cold frame with overhead protection. Even a single prolonged wet episode in winter can destroy the cushion.
Why is my allioni's primrose vine weevil?
Adult weevils notch leaf margins at night while larvae devour roots; inspect pot-grown plants regularly and treat with nematode drench (Steinernema kraussei) in late summer.