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