Growli

Overwintering guide

How to overwinter silver crown cotyledon

Verdict
Keep frost-free
When
Move under cover before the first hard frost; back outside after the last spring frost.
Hardiness
Silver Crown Cotyledon is hardy to roughly USDA zone 9 — winter lows around -7°C. That means it takes cool conditions but not a real freeze.

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 silver crown cotyledon in winter

Bringing silver crown cotyledon 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 silver crown cotyledon care

Overwintering silver crown cotyledon — FAQ

Does silver crown cotyledon need to come indoors for winter?

Silver Crown Cotyledon is hardy to roughly USDA zone 9 — winter lows around -7°C. That means it takes cool conditions but not a real freeze. Silver Crown Cotyledon 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 silver crown cotyledon for winter?

Move under cover before the first hard frost; back outside after the last spring frost.

How often should I water silver crown cotyledon in winter?

Water only occasionally — enough that the rootball never dries out completely, no more. No feeding until spring growth begins.

What kills silver crown cotyledon over winter?

Bringing silver crown cotyledon 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.