Troubleshooting
Tree Houseleek problems — and how to fix them
Tree Houseleek (Aeonium arboreum) 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.
Leggy, stretched growth (etiolation)
Pale, elongated stems with widely spaced leaves mean too little light. Move to a sunnier spot; cut and re-root the leggy top to restart a compact plant.
Root rot and sudden collapse
Caused by overwatering, water pooling in the rosette, or poorly draining soil. Use a gritty mix, let soil dry between waterings, and water less in summer dormancy.
Summer leaf drop and curling
Closing rosettes and shedding lower leaves in hot weather are usually normal summer dormancy, not a problem. Give light shade and minimal water; growth resumes in autumn.
Mealybugs and aphids
Look for white cottony masses in leaf axils or clusters of aphids on new growth and flower stalks. Wipe with a cotton swab dipped in rubbing alcohol or treat with diluted neem oil.
Rosette dies after flowering
Aeonium is monocarpic, so a rosette naturally dies once it produces its tall yellow flower spike. This is expected; side branches and offsets carry the plant on.
Frost damage
Even a light frost turns leaves mushy and translucent. Bring plants indoors or under glass before temperatures approach freezing.
Prevent tree houseleek problems before they start
Most tree houseleek issues are care-mismatch, not bad luck. Dial in the basics:
Tree Houseleek problems — FAQ
Why is my tree houseleek leggy, stretched growth (etiolation)?
Pale, elongated stems with widely spaced leaves mean too little light. Move to a sunnier spot; cut and re-root the leggy top to restart a compact plant.
Why is my tree houseleek root rot and sudden collapse?
Caused by overwatering, water pooling in the rosette, or poorly draining soil. Use a gritty mix, let soil dry between waterings, and water less in summer dormancy.
Why is my tree houseleek summer leaf drop and curling?
Closing rosettes and shedding lower leaves in hot weather are usually normal summer dormancy, not a problem. Give light shade and minimal water; growth resumes in autumn.
Why is my tree houseleek mealybugs and aphids?
Look for white cottony masses in leaf axils or clusters of aphids on new growth and flower stalks. Wipe with a cotton swab dipped in rubbing alcohol or treat with diluted neem oil.
Why is my tree houseleek rosette dies after flowering?
Aeonium is monocarpic, so a rosette naturally dies once it produces its tall yellow flower spike. This is expected; side branches and offsets carry the plant on.
Why is my tree houseleek frost damage?
Even a light frost turns leaves mushy and translucent. Bring plants indoors or under glass before temperatures approach freezing.