Troubleshooting
Green-Yellow Catasetum problems — and how to fix them
Green-Yellow Catasetum (Catasetum viridiflavum) 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.
Root rot from wet winter rest
Any residual moisture during the leafless dormancy period rapidly causes root and rhizome rot. The medium should remain completely dry — do not water at all until new growth is visibly emerging in spring.
Weak or absent male flowers due to low light
Insufficient light (below ~25,000 lux) results in spindly pseudobulbs and predominantly or exclusively female flowers, which are less ornamental. Maximise light during the growing season.
Spider mites in low humidity
Humidity below 40% during the growing season encourages spider mites on the underside of the large leaves. Increase humidity and air movement; spray with water or a miticide if populations establish.
Prevent green-yellow catasetum problems before they start
Most green-yellow catasetum issues are care-mismatch, not bad luck. Dial in the basics:
Green-Yellow Catasetum problems — FAQ
Why is my green-yellow catasetum root rot from wet winter rest?
Any residual moisture during the leafless dormancy period rapidly causes root and rhizome rot. The medium should remain completely dry — do not water at all until new growth is visibly emerging in spring.
Why is my green-yellow catasetum weak or absent male flowers due to low light?
Insufficient light (below ~25,000 lux) results in spindly pseudobulbs and predominantly or exclusively female flowers, which are less ornamental. Maximise light during the growing season.
Why is my green-yellow catasetum spider mites in low humidity?
Humidity below 40% during the growing season encourages spider mites on the underside of the large leaves. Increase humidity and air movement; spray with water or a miticide if populations establish.