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