Overwintering guide
How to overwinter rocky mountain douglas fir
Winter watering
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
The mistake that kills rocky mountain douglas fir in winter
Cutting rocky mountain douglas fir 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 rocky mountain douglas fir care
- Overwintering douglas fir — the species this cultivar belongs to
- Full rocky mountain douglas fir care guide
- Rocky Mountain Douglas Fir temperature range
- How often to water rocky mountain douglas fir
- How to prune rocky mountain douglas fir
- Common rocky mountain douglas fir problems & fixes
- Best plant identifier apps — tested and ranked
Overwintering rocky mountain douglas fir — FAQ
Does rocky mountain douglas fir need to come indoors for winter?
Rocky Mountain Douglas Fir is hardy to roughly USDA zone 3 — winter lows around -40°C. That means it can stay outside all winter in most temperate gardens. Rocky Mountain Douglas Fir 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 rocky mountain douglas fir for winter?
Tidy and mulch in late autumn; leave the plant undisturbed until spring.
How often should I water rocky mountain douglas fir in winter?
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
What kills rocky mountain douglas fir over winter?
Cutting rocky mountain douglas fir 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.