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