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