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