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