Troubleshooting
Yellow-cup Pitcairnia problems — and how to fix them
Yellow-cup Pitcairnia (Pitcairnia xanthocalyx) is generally low-drama, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Crown rot from waterlogged crowns in cool weather
In autumn and winter, water pooling at the centre of the rosette combined with cool temperatures creates ideal conditions for Phytophthora crown rot; reduce watering and improve drainage as temperatures drop, and avoid wetting the central rosette when the thermometer is below 10°C.
Mealybugs in leaf axils
The closely packed leaf bases provide sheltered sites for mealybug colonies; check regularly and treat at first sign with isopropyl alcohol applied on a cotton swab, followed by a systemic insecticide drench if the infestation is widespread.
Prevent yellow-cup pitcairnia problems before they start
Most yellow-cup pitcairnia issues are care-mismatch, not bad luck. Dial in the basics:
Yellow-cup Pitcairnia problems — FAQ
Why is my yellow-cup pitcairnia crown rot from waterlogged crowns in cool weather?
In autumn and winter, water pooling at the centre of the rosette combined with cool temperatures creates ideal conditions for Phytophthora crown rot; reduce watering and improve drainage as temperatures drop, and avoid wetting the central rosette when the thermometer is below 10°C.
Why is my yellow-cup pitcairnia mealybugs in leaf axils?
The closely packed leaf bases provide sheltered sites for mealybug colonies; check regularly and treat at first sign with isopropyl alcohol applied on a cotton swab, followed by a systemic insecticide drench if the infestation is widespread.