Troubleshooting
Cylindrical Rock Jasmine problems — and how to fix them
Cylindrical Rock Jasmine (Androsace cylindrica) 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.
Irreversible cushion rot
Any moisture reaching the rosette centres, particularly in cool or humid conditions, rapidly triggers lethal fungal rot. Prevention through alpine house cultivation, near-dry winter management, and vertical tufa planting is the only reliable approach; affected sections cannot be saved.
Failure on non-calcareous substrates
This strict endemic calcicole declines rapidly on acidic or lime-free growing media, showing yellowing, poor growth, and failure to flower. Alkaline, lime-rich limestone grit or genuine tufa is the non-negotiable substrate requirement.
Extremely slow establishment
Even under ideal alpine house conditions, this species grows only a few millimetres per year. Impatient management — repotting too frequently or disturbing the root run — sets growth back by seasons. Handle only when strictly necessary and treat as a long-term specimen.
Prevent cylindrical rock jasmine problems before they start
Most cylindrical rock jasmine issues are care-mismatch, not bad luck. Dial in the basics:
Cylindrical Rock Jasmine problems — FAQ
Why is my cylindrical rock jasmine irreversible cushion rot?
Any moisture reaching the rosette centres, particularly in cool or humid conditions, rapidly triggers lethal fungal rot. Prevention through alpine house cultivation, near-dry winter management, and vertical tufa planting is the only reliable approach; affected sections cannot be saved.
Why is my cylindrical rock jasmine failure on non-calcareous substrates?
This strict endemic calcicole declines rapidly on acidic or lime-free growing media, showing yellowing, poor growth, and failure to flower. Alkaline, lime-rich limestone grit or genuine tufa is the non-negotiable substrate requirement.
Why is my cylindrical rock jasmine extremely slow establishment?
Even under ideal alpine house conditions, this species grows only a few millimetres per year. Impatient management — repotting too frequently or disturbing the root run — sets growth back by seasons. Handle only when strictly necessary and treat as a long-term specimen.