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