Troubleshooting
Hairy Houseleek problems — and how to fix them
Hairy Houseleek (Sempervivum ciliosum) 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.
Crown rot
The most common issue, caused by overwatering or water pooling inside the hairy rosette. Ensure the soil dries fully between waterings and always water at soil level.
Etiolation (stretching)
Rosettes become loose and elongated when light is insufficient. Move to the sunniest available position or supplement with a grow light for at least 6 hours daily.
Mealybugs
White waxy insects can hide within the dense hairs of the rosette. Remove manually with a cotton swab dipped in isopropyl alcohol, or apply a dilute neem-oil drench to the soil.
Prevent hairy houseleek problems before they start
Most hairy houseleek issues are care-mismatch, not bad luck. Dial in the basics:
Looking for hairy houseleek in general rather than its problems? Read the full hairy houseleek care guide — light, water, soil and feeding.
Hairy Houseleek problems — FAQ
Why is my hairy houseleek crown rot?
The most common issue, caused by overwatering or water pooling inside the hairy rosette. Ensure the soil dries fully between waterings and always water at soil level.
Why is my hairy houseleek etiolation (stretching)?
Rosettes become loose and elongated when light is insufficient. Move to the sunniest available position or supplement with a grow light for at least 6 hours daily.
Why is my hairy houseleek mealybugs?
White waxy insects can hide within the dense hairs of the rosette. Remove manually with a cotton swab dipped in isopropyl alcohol, or apply a dilute neem-oil drench to the soil.