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