Overwintering guide
How to overwinter thai mountain palm
Winter watering
Water only occasionally — enough that the rootball never dries out completely, no more. No feeding until spring growth begins.
The mistake that kills thai mountain palm in winter
Bringing thai mountain palm into a warm living room. Too much winter warmth forces weak, pale growth that collapses when it goes back outside — cool and bright beats warm and dim.
More thai mountain palm care
Overwintering thai mountain palm — FAQ
Does thai mountain palm need to come indoors for winter?
Thai Mountain Palm is hardy to roughly USDA zone 9 — winter lows around -7°C. That means it takes cool conditions but not a real freeze. Thai Mountain Palm will take cool conditions but not a hard freeze, so the aim is a frost-free winter rather than a warm one. An unheated greenhouse, porch, conservatory or bright garage all work well. Keep it cool, bright and on the dry side, and it will hold steady until growth restarts in spring.
When should I move thai mountain palm for winter?
Move under cover before the first hard frost; back outside after the last spring frost.
How often should I water thai mountain palm in winter?
Water only occasionally — enough that the rootball never dries out completely, no more. No feeding until spring growth begins.
What kills thai mountain palm over winter?
Bringing thai mountain palm into a warm living room. Too much winter warmth forces weak, pale growth that collapses when it goes back outside — cool and bright beats warm and dim.