Troubleshooting
Clustered Dendrobium problems — and how to fix them
Clustered Dendrobium (Dendrobium lindleyi) 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.
No flowering
Insufficient winter cold and drought suppresses spike initiation — temperatures must drop to 10-15°C at night during the rest phase.
Root rot
Poor drainage or overwatering in a dense medium causes roots to blacken and collapse.
Spider mites
Fine webbing on pseudobulbs signals spider mites, favoured by hot, dry, stagnant indoor air.
Pseudobulb yellowing
Older back-bulbs naturally yellow after 2-3 seasons, but premature yellowing of current season pseudobulbs indicates excess water or low light.
Scale insects
Brown shell-like scales along pseudobulb sheaths, often introduced on new acquisitions.
Prevent clustered dendrobium problems before they start
Most clustered dendrobium issues are care-mismatch, not bad luck. Dial in the basics:
Clustered Dendrobium problems — FAQ
Why is my clustered dendrobium no flowering?
Insufficient winter cold and drought suppresses spike initiation — temperatures must drop to 10-15°C at night during the rest phase.
Why is my clustered dendrobium root rot?
Poor drainage or overwatering in a dense medium causes roots to blacken and collapse.
Why is my clustered dendrobium spider mites?
Fine webbing on pseudobulbs signals spider mites, favoured by hot, dry, stagnant indoor air.
Why is my clustered dendrobium pseudobulb yellowing?
Older back-bulbs naturally yellow after 2-3 seasons, but premature yellowing of current season pseudobulbs indicates excess water or low light.
Why is my clustered dendrobium scale insects?
Brown shell-like scales along pseudobulb sheaths, often introduced on new acquisitions.