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