Troubleshooting
Houseleek Saxifrage problems — and how to fix them
Houseleek Saxifrage (Saxifraga sempervivum) 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.
Botrytis in compact rosettes
Grey mould (Botrytis cinerea) can develop unseen in the tight leaf clusters, particularly over winter; ensure maximum ventilation, water only at the base, and remove any dead leaves promptly.
Failure to flower
Insufficient chilling (vernalisation) in mild winters can prevent flower initiation; plants grown indoors or under excessive protection may not receive the cold period they need. Ensure pots overwinter outdoors in a cold but not waterlogged position.
Prevent houseleek saxifrage problems before they start
Most houseleek saxifrage issues are care-mismatch, not bad luck. Dial in the basics:
Houseleek Saxifrage problems — FAQ
Why is my houseleek saxifrage botrytis in compact rosettes?
Grey mould (Botrytis cinerea) can develop unseen in the tight leaf clusters, particularly over winter; ensure maximum ventilation, water only at the base, and remove any dead leaves promptly.
Why is my houseleek saxifrage failure to flower?
Insufficient chilling (vernalisation) in mild winters can prevent flower initiation; plants grown indoors or under excessive protection may not receive the cold period they need. Ensure pots overwinter outdoors in a cold but not waterlogged position.