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