Troubleshooting
Rigid Draba problems — and how to fix them
Rigid Draba (Draba rigida) 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.
Winter wet rot
The tight, impermeable cushion is extremely prone to rotting from above when exposed to prolonged rainfall. Cultivation under glass in an alpine house or with overhead protection during winter is strongly recommended.
Cushion collapse after flowering
The central cushion can die back suddenly after a heavy flowering season, especially in older specimens. Carefully trim away dead portions and dust with sulphur powder to discourage secondary fungal infection.
Poor flowering due to lack of light
Insufficient sunlight, even short periods of shade, results in loose, open cushions and few flowers. Ensure the plant receives unobstructed sun throughout the day, repositioning in the alpine house if necessary.
Prevent rigid draba problems before they start
Most rigid draba issues are care-mismatch, not bad luck. Dial in the basics:
Rigid Draba problems — FAQ
Why is my rigid draba winter wet rot?
The tight, impermeable cushion is extremely prone to rotting from above when exposed to prolonged rainfall. Cultivation under glass in an alpine house or with overhead protection during winter is strongly recommended.
Why is my rigid draba cushion collapse after flowering?
The central cushion can die back suddenly after a heavy flowering season, especially in older specimens. Carefully trim away dead portions and dust with sulphur powder to discourage secondary fungal infection.
Why is my rigid draba poor flowering due to lack of light?
Insufficient sunlight, even short periods of shade, results in loose, open cushions and few flowers. Ensure the plant receives unobstructed sun throughout the day, repositioning in the alpine house if necessary.