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