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