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