Troubleshooting
Varied-Leaved Rock Rose problems — and how to fix them
Varied-Leaved Rock Rose (Cistus heterophyllus) 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.
Frost damage in exposed sites
Being one of the less frost-hardy Cistus species, plants can be cut back or killed by temperatures below -5°C, especially in combination with wet soil or cold wind. In USDA zone 8 and colder UK gardens, plant at the base of a sunny wall for additional shelter.
Honey fungus (Armillaria)
Like other Cistus species, C. heterophyllus is susceptible to honey fungus. Symptoms include sudden wilting and death; examine the root collar for white mycelial sheets and black 'bootlaces' (rhizomorphs). Remove all infected material promptly.
Prevent varied-leaved rock rose problems before they start
Most varied-leaved rock rose issues are care-mismatch, not bad luck. Dial in the basics:
Looking for varied-leaved rock rose in general rather than its problems? Read the full varied-leaved rock rose care guide — light, water, soil and feeding.
Varied-Leaved Rock Rose problems — FAQ
Why is my varied-leaved rock rose frost damage in exposed sites?
Being one of the less frost-hardy Cistus species, plants can be cut back or killed by temperatures below -5°C, especially in combination with wet soil or cold wind. In USDA zone 8 and colder UK gardens, plant at the base of a sunny wall for additional shelter.
Why is my varied-leaved rock rose honey fungus (armillaria)?
Like other Cistus species, C. heterophyllus is susceptible to honey fungus. Symptoms include sudden wilting and death; examine the root collar for white mycelial sheets and black 'bootlaces' (rhizomorphs). Remove all infected material promptly.