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