Troubleshooting
Mossy Saxifrage problems — and how to fix them
Mossy Saxifrage (Saxifraga hypnoides) 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 warm, wet conditions
The central crown rots if kept wet in warm weather or during mild, damp winters. Ensure very sharp drainage, top-dress the crown with grit, and avoid covering it with mulch. Remove any rotted sections promptly and dust cut surfaces with fungicidal powder.
Summer scorch and die-back
In hot, sunny positions the cushion browns and dies back in midsummer. Site in a cool, shaded spot or an east-facing trough; water during heat waves and the plant normally regenerates at the edges in cooler autumn weather.
Prevent mossy saxifrage problems before they start
Most mossy saxifrage issues are care-mismatch, not bad luck. Dial in the basics:
Mossy Saxifrage problems — FAQ
Why is my mossy saxifrage crown rot in warm, wet conditions?
The central crown rots if kept wet in warm weather or during mild, damp winters. Ensure very sharp drainage, top-dress the crown with grit, and avoid covering it with mulch. Remove any rotted sections promptly and dust cut surfaces with fungicidal powder.
Why is my mossy saxifrage summer scorch and die-back?
In hot, sunny positions the cushion browns and dies back in midsummer. Site in a cool, shaded spot or an east-facing trough; water during heat waves and the plant normally regenerates at the edges in cooler autumn weather.