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