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