Overwintering guide
How to overwinter alaska mix nasturtium
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 alaska mix nasturtium in winter
Bringing alaska mix nasturtium 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 alaska mix nasturtium care
- Overwintering nasturtium — the species this cultivar belongs to
- Full alaska mix nasturtium care guide
- Alaska Mix Nasturtium temperature range
- How often to water alaska mix nasturtium
- How to prune alaska mix nasturtium
- Common alaska mix nasturtium problems & fixes
- Best plant identifier apps — tested and ranked
Overwintering alaska mix nasturtium — FAQ
Does alaska mix nasturtium need to come indoors for winter?
Alaska Mix Nasturtium is hardy to roughly USDA zone 9 — winter lows around -7°C. That means it takes cool conditions but not a real freeze. Alaska Mix Nasturtium 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 alaska mix nasturtium for winter?
Move under cover before the first hard frost; back outside after the last spring frost.
How often should I water alaska mix nasturtium in winter?
Water only occasionally — enough that the rootball never dries out completely, no more. No feeding until spring growth begins.
What kills alaska mix nasturtium over winter?
Bringing alaska mix nasturtium 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.