Troubleshooting
Crepe Ginger problems — and how to fix them
Crepe Ginger (Costus speciosus) 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.
Rhizome rot
Caused by overwatering during the winter dormancy period when the plant dies back; allow compost to dry almost completely between waterings from late autumn until new growth emerges in spring.
Spider mites and mealybugs
Low humidity encourages spider mite infestations on the undersides of leaves; treat with insecticidal soap or neem oil and increase ambient humidity to 60% or above as a preventive measure.
Leaf scorch
Prolonged exposure to harsh direct afternoon sun bleaches and scorches the large, thin leaves; relocate to a position with filtered or morning sun only.
Prevent crepe ginger problems before they start
Most crepe ginger issues are care-mismatch, not bad luck. Dial in the basics:
Crepe Ginger problems — FAQ
Why is my crepe ginger rhizome rot?
Caused by overwatering during the winter dormancy period when the plant dies back; allow compost to dry almost completely between waterings from late autumn until new growth emerges in spring.
Why is my crepe ginger spider mites and mealybugs?
Low humidity encourages spider mite infestations on the undersides of leaves; treat with insecticidal soap or neem oil and increase ambient humidity to 60% or above as a preventive measure.
Why is my crepe ginger leaf scorch?
Prolonged exposure to harsh direct afternoon sun bleaches and scorches the large, thin leaves; relocate to a position with filtered or morning sun only.