Troubleshooting
Yellow Promenaea problems — and how to fix them
Yellow Promenaea (Promenaea xanthina) 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
Fine bark or sphagnum holding too much water causes root rot; repot annually into fresh medium and ensure the pot size is not excessive relative to the root mass.
Pseudobulb shrivelling
Prolonged dryness causes wrinkling of pseudobulbs; water more frequently during hot summer periods and check for root loss which impairs water uptake.
Botrytis flower spotting
Cool, humid, and stagnant air can cause grey mould on flowers; improve ventilation and avoid misting open blooms.
Scale insects
Inspect pseudobulbs and the undersides of leaves regularly; treat with insecticidal soap or neem oil at the first sign of infestation.
Prevent yellow promenaea problems before they start
Most yellow promenaea issues are care-mismatch, not bad luck. Dial in the basics:
Yellow Promenaea problems — FAQ
Why is my yellow promenaea root rot?
Fine bark or sphagnum holding too much water causes root rot; repot annually into fresh medium and ensure the pot size is not excessive relative to the root mass.
Why is my yellow promenaea pseudobulb shrivelling?
Prolonged dryness causes wrinkling of pseudobulbs; water more frequently during hot summer periods and check for root loss which impairs water uptake.
Why is my yellow promenaea botrytis flower spotting?
Cool, humid, and stagnant air can cause grey mould on flowers; improve ventilation and avoid misting open blooms.
Why is my yellow promenaea scale insects?
Inspect pseudobulbs and the undersides of leaves regularly; treat with insecticidal soap or neem oil at the first sign of infestation.