Overwintering guide
How to overwinter costus woodsonii
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 costus woodsonii in winter
Bringing costus woodsonii 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 costus woodsonii care
Overwintering costus woodsonii — FAQ
Does costus woodsonii need to come indoors for winter?
Costus Woodsonii is hardy to roughly USDA zone 9 — winter lows around -7°C. That means it takes cool conditions but not a real freeze. Costus Woodsonii 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 costus woodsonii for winter?
Move under cover before the first hard frost; back outside after the last spring frost.
How often should I water costus woodsonii in winter?
Water only occasionally — enough that the rootball never dries out completely, no more. No feeding until spring growth begins.
What kills costus woodsonii over winter?
Bringing costus woodsonii 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.