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