Overwintering guide
How to overwinter atlantic white cedar
Winter watering
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
The mistake that kills atlantic white cedar in winter
Cutting atlantic white cedar hard back in autumn "to tidy up". That removes the growth that shelters the crown, and on some plants removes next season's flower buds entirely.
More atlantic white cedar care
Overwintering atlantic white cedar — FAQ
Does atlantic white cedar need to come indoors for winter?
Atlantic White Cedar is hardy to roughly USDA zone 4 — winter lows around -34°C. That means it can stay outside all winter in most temperate gardens. Atlantic White Cedar is properly hardy and overwinters outside without fuss. Tidy away anything dead or diseased, apply a mulch over the crown to steady soil temperatures, and otherwise leave it alone — many hardy plants actually need a cold period to flower and grow well the following year. Save hard pruning for the right season rather than doing it in autumn.
When should I move atlantic white cedar for winter?
Tidy and mulch in late autumn; leave the plant undisturbed until spring.
How often should I water atlantic white cedar in winter?
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
What kills atlantic white cedar over winter?
Cutting atlantic white cedar hard back in autumn "to tidy up". That removes the growth that shelters the crown, and on some plants removes next season's flower buds entirely.