Troubleshooting
White-Flowered Lycaste problems — and how to fix them
White-Flowered Lycaste (Lycaste leucantha) 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.
Failure to produce scapes
White-Flowered Lycaste requires a clear autumn dry-and-cool rest to trigger flowering. Without reduced watering and cool nights (10–14°C), pseudobulbs produce only vegetative growth the following spring. Implement the rest period strictly from October.
Pseudobulb shrivelling
Moderate shrivelling during the dry rest is normal and expected. Excessive shrivelling signals root loss — check roots when repotting, trim dead tissue, and rest the plant in a humid bag briefly to re-hydrate pseudobulbs before potting.
Botrytis (grey mould) on flowers
White flowers are particularly susceptible to Botrytis cinerea, which causes brown spotting in cool, damp, still air. Improve air circulation around blooming plants and avoid misting during the flowering period.
Prevent white-flowered lycaste problems before they start
Most white-flowered lycaste issues are care-mismatch, not bad luck. Dial in the basics:
White-Flowered Lycaste problems — FAQ
Why is my white-flowered lycaste failure to produce scapes?
White-Flowered Lycaste requires a clear autumn dry-and-cool rest to trigger flowering. Without reduced watering and cool nights (10–14°C), pseudobulbs produce only vegetative growth the following spring. Implement the rest period strictly from October.
Why is my white-flowered lycaste pseudobulb shrivelling?
Moderate shrivelling during the dry rest is normal and expected. Excessive shrivelling signals root loss — check roots when repotting, trim dead tissue, and rest the plant in a humid bag briefly to re-hydrate pseudobulbs before potting.
Why is my white-flowered lycaste botrytis (grey mould) on flowers?
White flowers are particularly susceptible to Botrytis cinerea, which causes brown spotting in cool, damp, still air. Improve air circulation around blooming plants and avoid misting during the flowering period.