Troubleshooting
Woolly Rock Jasmine problems — and how to fix them
Woolly Rock Jasmine (Androsace lanuginosa) 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.
Stem and crown rot in winter
The trailing stems are vulnerable to rot where they contact persistently wet soil in winter. Improve drainage, remove dead or damaged stems promptly, and apply a grit mulch beneath the foliage to reduce soil contact and moisture retention.
Powdery mildew
Mildew can affect foliage in hot, dry spells with poor air circulation, appearing as a white powdery coating. Improve ventilation, avoid evening watering, and treat with a fungicide if spreading. Good siting in an open position is the best preventative.
Short-lived plant decline
Androsace lanuginosa can be relatively short-lived, particularly in poorly drained soils. Take regular cuttings from healthy stem tips each summer to maintain a supply of vigorous replacement plants.
Prevent woolly rock jasmine problems before they start
Most woolly rock jasmine issues are care-mismatch, not bad luck. Dial in the basics:
Woolly Rock Jasmine problems — FAQ
Why is my woolly rock jasmine stem and crown rot in winter?
The trailing stems are vulnerable to rot where they contact persistently wet soil in winter. Improve drainage, remove dead or damaged stems promptly, and apply a grit mulch beneath the foliage to reduce soil contact and moisture retention.
Why is my woolly rock jasmine powdery mildew?
Mildew can affect foliage in hot, dry spells with poor air circulation, appearing as a white powdery coating. Improve ventilation, avoid evening watering, and treat with a fungicide if spreading. Good siting in an open position is the best preventative.
Why is my woolly rock jasmine short-lived plant decline?
Androsace lanuginosa can be relatively short-lived, particularly in poorly drained soils. Take regular cuttings from healthy stem tips each summer to maintain a supply of vigorous replacement plants.