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