Overwintering guide
How to overwinter sensation mixed cosmos
Winter watering
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
The mistake that kills sensation mixed cosmos in winter
Cutting sensation mixed cosmos 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 sensation mixed cosmos care
- Overwintering cosmos — the species this cultivar belongs to
- Overwintering sensation mixed cosmos — our other guide for the same plant
- Full sensation mixed cosmos care guide
- Sensation Mixed cosmos temperature range
- How often to water sensation mixed cosmos
- How to prune sensation mixed cosmos
- Common sensation mixed cosmos problems & fixes
- Best plant identifier apps — tested and ranked
Overwintering sensation mixed cosmos — FAQ
Does sensation mixed cosmos need to come indoors for winter?
Sensation Mixed cosmos is hardy to roughly USDA zone 2 — winter lows around -46°C. That means it can stay outside all winter in most temperate gardens. Sensation Mixed cosmos 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 sensation mixed cosmos for winter?
Tidy and mulch in late autumn; leave the plant undisturbed until spring.
How often should I water sensation mixed cosmos in winter?
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
What kills sensation mixed cosmos over winter?
Cutting sensation mixed cosmos 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.