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