Growli

Overwintering guide

How to overwinter jack-o-lantern pumpkin

Verdict
Stays outside
When
Tidy and mulch in late autumn; leave the plant undisturbed until spring.
Hardiness
Jack-o-Lantern Pumpkin is hardy to roughly USDA zone 3 — winter lows around -40°C. That means it can stay outside all winter in most temperate gardens.

Winter watering

No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.

The mistake that kills jack-o-lantern pumpkin in winter

Cutting jack-o-lantern pumpkin 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 jack-o-lantern pumpkin care

Overwintering jack-o-lantern pumpkin — FAQ

Does jack-o-lantern pumpkin need to come indoors for winter?

Jack-o-Lantern Pumpkin is hardy to roughly USDA zone 3 — winter lows around -40°C. That means it can stay outside all winter in most temperate gardens. Jack-o-Lantern Pumpkin 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 jack-o-lantern pumpkin for winter?

Tidy and mulch in late autumn; leave the plant undisturbed until spring.

How often should I water jack-o-lantern pumpkin in winter?

No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.

What kills jack-o-lantern pumpkin over winter?

Cutting jack-o-lantern pumpkin 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.