Overwintering guide
How to overwinter moon cactus
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 moon cactus in winter
Bringing moon cactus 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 moon cactus care
- Overwintering moon cactus — the species this cultivar belongs to
- Overwintering moon cactus — our other guide for the same plant
- Full moon cactus care guide
- Moon Cactus temperature range
- How often to water moon cactus
- How to prune moon cactus
- Common moon cactus problems & fixes
Overwintering moon cactus — FAQ
Does moon cactus need to come indoors for winter?
Moon Cactus is hardy to roughly USDA zone 9 — winter lows around -7°C. That means it takes cool conditions but not a real freeze. Moon Cactus 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 moon cactus for winter?
Move under cover before the first hard frost; back outside after the last spring frost.
How often should I water moon cactus in winter?
Water only occasionally — enough that the rootball never dries out completely, no more. No feeding until spring growth begins.
What kills moon cactus over winter?
Bringing moon cactus 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.