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