Troubleshooting
Pineapple-Head Ginger problems — and how to fix them
Pineapple-Head Ginger (Costus comosus) 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.
Failure to flower after frost
If stems are cut back by frost or cold, the plant must regrow entirely from the rhizome, and this regrowth rarely flowers in the same season — protect rhizomes with thick mulch or bring containers indoors before temperatures reach 5°C.
Spider mites in dry conditions
Spider mites proliferate in low-humidity environments, causing stippled, yellowing foliage; increase humidity and mist regularly, and treat infestations with neem oil or a miticide spray applied to leaf undersides.
Prevent pineapple-head ginger problems before they start
Most pineapple-head ginger issues are care-mismatch, not bad luck. Dial in the basics:
Pineapple-Head Ginger problems — FAQ
Why is my pineapple-head ginger failure to flower after frost?
If stems are cut back by frost or cold, the plant must regrow entirely from the rhizome, and this regrowth rarely flowers in the same season — protect rhizomes with thick mulch or bring containers indoors before temperatures reach 5°C.
Why is my pineapple-head ginger spider mites in dry conditions?
Spider mites proliferate in low-humidity environments, causing stippled, yellowing foliage; increase humidity and mist regularly, and treat infestations with neem oil or a miticide spray applied to leaf undersides.