Troubleshooting
Pyrenean Rock Jasmine problems — and how to fix them
Pyrenean Rock Jasmine (Androsace pyrenaica) 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.
Fungal crown rot in wet winters
By far the most common problem; persistent rain on the cushion in cold conditions triggers rapid Botrytis or collar rot — protect with a pane of glass over the trough from October to April, or move to an alpine house.
Aphid infestation under glass
Root and shoot aphids can colonise cushions in the warm, sheltered conditions of an alpine house; inspect roots at repotting and treat with an appropriate insecticide, ensuring the cushion surface stays dry during treatment.
Prevent pyrenean rock jasmine problems before they start
Most pyrenean rock jasmine issues are care-mismatch, not bad luck. Dial in the basics:
Pyrenean Rock Jasmine problems — FAQ
Why is my pyrenean rock jasmine fungal crown rot in wet winters?
By far the most common problem; persistent rain on the cushion in cold conditions triggers rapid Botrytis or collar rot — protect with a pane of glass over the trough from October to April, or move to an alpine house.
Why is my pyrenean rock jasmine aphid infestation under glass?
Root and shoot aphids can colonise cushions in the warm, sheltered conditions of an alpine house; inspect roots at repotting and treat with an appropriate insecticide, ensuring the cushion surface stays dry during treatment.