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