Troubleshooting
Boehmer's Dunce Cap problems — and how to fix them
Boehmer's Dunce Cap (Orostachys boehmeri) 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.
Mother rosette dying after flowering
Orostachys is monocarpic — each rosette blooms once then dies. This is normal, not a problem. The plant produces abundant offsets on stolons before flowering; separate and pot these up to maintain the colony.
Crown rot in wet, cold conditions
Despite cold hardiness, Orostachys is susceptible to crown rot when soil is wet and cold simultaneously. In winter, ensure very free drainage or grow in an alpine house to protect from excessive wet.
Aphids on flower spikes
The erect autumn flower spikes can attract aphid colonies. Treat with a strong water jet or insecticidal soap spray. Address early to protect the stolon-tip plantlets developing simultaneously.
Prevent boehmer's dunce cap problems before they start
Most boehmer's dunce cap issues are care-mismatch, not bad luck. Dial in the basics:
Boehmer's Dunce Cap problems — FAQ
Why is my boehmer's dunce cap mother rosette dying after flowering?
Orostachys is monocarpic — each rosette blooms once then dies. This is normal, not a problem. The plant produces abundant offsets on stolons before flowering; separate and pot these up to maintain the colony.
Why is my boehmer's dunce cap crown rot in wet, cold conditions?
Despite cold hardiness, Orostachys is susceptible to crown rot when soil is wet and cold simultaneously. In winter, ensure very free drainage or grow in an alpine house to protect from excessive wet.
Why is my boehmer's dunce cap aphids on flower spikes?
The erect autumn flower spikes can attract aphid colonies. Treat with a strong water jet or insecticidal soap spray. Address early to protect the stolon-tip plantlets developing simultaneously.