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