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