Troubleshooting
Rough Coelogyne problems — and how to fix them
Rough Coelogyne (Coelogyne asperata) 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.
Black pseudobulb tips / fungal rot
New growths and young pseudobulbs are prone to Botrytis and bacterial rot if water pools at their base in cool conditions. Water in the morning, ensure good air circulation, and avoid wetting the new growths directly.
Spider mites in dry conditions
Low humidity encourages spider mite infestations, showing as fine webbing and silvery leaf stippling. Raise humidity above 60%, mist the undersides of leaves, and treat with an insecticidal soap or neem oil spray.
Sparse flowering
Requires large, well-established clumps and bright light to flower freely. Dividing too frequently or keeping in shade reduces bloom count. Allow clumps to grow into large specimens for maximum flower production.
Prevent rough coelogyne problems before they start
Most rough coelogyne issues are care-mismatch, not bad luck. Dial in the basics:
Rough Coelogyne problems — FAQ
Why is my rough coelogyne black pseudobulb tips / fungal rot?
New growths and young pseudobulbs are prone to Botrytis and bacterial rot if water pools at their base in cool conditions. Water in the morning, ensure good air circulation, and avoid wetting the new growths directly.
Why is my rough coelogyne spider mites in dry conditions?
Low humidity encourages spider mite infestations, showing as fine webbing and silvery leaf stippling. Raise humidity above 60%, mist the undersides of leaves, and treat with an insecticidal soap or neem oil spray.
Why is my rough coelogyne sparse flowering?
Requires large, well-established clumps and bright light to flower freely. Dividing too frequently or keeping in shade reduces bloom count. Allow clumps to grow into large specimens for maximum flower production.