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