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