Troubleshooting
Lesser Silver Saxifrage problems — and how to fix them
Lesser Silver Saxifrage (Saxifraga cochlearis) 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 winter wet
The tight, compact cushions are highly vulnerable to collar rot if moisture collects in the centre during cold, wet winters; grow in a raised trough or alpine house, or protect with an open-sided pane of glass from late autumn.
Red spider mite (under glass)
When grown in an alpine house, red spider mite (Tetranychus urticae) can infest rosettes in warm, dry conditions; improve ventilation and apply a predatory mite (Phytoseiulus persimilis) at first sign.
Prevent lesser silver saxifrage problems before they start
Most lesser silver saxifrage issues are care-mismatch, not bad luck. Dial in the basics:
Lesser Silver Saxifrage problems — FAQ
Why is my lesser silver saxifrage crown rot in winter wet?
The tight, compact cushions are highly vulnerable to collar rot if moisture collects in the centre during cold, wet winters; grow in a raised trough or alpine house, or protect with an open-sided pane of glass from late autumn.
Why is my lesser silver saxifrage red spider mite (under glass)?
When grown in an alpine house, red spider mite (Tetranychus urticae) can infest rosettes in warm, dry conditions; improve ventilation and apply a predatory mite (Phytoseiulus persimilis) at first sign.