Cucurbita maxima

Pumpkin

A practical guide to growing pumpkin in the home garden.

Growing profiles

Choose how this crop will be grown. Dimensions, spacing and timing belong to the selected profile—not to the species as a single universal value.

Trailing pumpkin / winter squash

Long-vined Cucurbita maxima form requiring substantial ground area.

Typical mature height
30–60 cm (12–24 in) Editorial synthesisbasis
Mature canopy
150–400 cm (59–157 in) × 300–800 cm (118–315 in) Editorial synthesisbasisbasis
Plant spacing
90–150 cm (35–59 in) Editorial synthesisbasis
Row spacing
150–240 cm (59–94 in) Editorial synthesisbasis
Planting arrangement
single row · open ground Editorial synthesisbasis
Support
Usually unnecessary
Best germination range
16–35 °C (61–95 °F) Editorial synthesisbasis

Climate-relative calendar

Frost and transplant rules become local dates when climate data is available. Cultivar maturity and crop condition are never replaced by a fabricated date.

Plant Pumpkin / winter squash7 days after last spring frost to 28 days after last spring frost Direct sourceEditorial synthesisbasisRecommended: Soil temperature at least 10 °C (50 °F) for 3 consecutive days. Editorial synthesisbasis
Begin harvesting Pumpkin / winter squash90 days after sowing to 120 days after sowing Planning estimatebasis
Finish harvesting Pumpkin / winter squash14 days after first harvest to 30 days after first harvest
Remove Pumpkin / winter squash cropthe expected end of harvest to 7 days after the expected end of harvest

Compact pumpkin / winter squash

Bush or short-vined Cucurbita maxima form for constrained spaces.

Typical mature height
45–90 cm (18–35 in) Editorial synthesisbasis
Mature canopy
90–240 cm (35–94 in) Editorial synthesisbasis
Plant spacing
60–120 cm (24–47 in) Editorial synthesisbasis
Row spacing
120–180 cm (47–71 in) Editorial synthesisbasis
Planting arrangement
single row · open ground Editorial synthesisbasis
Support
Usually unnecessary
Optional container
At least 76 L (20.1 US gal) · 1 plant Editorial synthesisbasis
Best germination range
16–35 °C (61–95 °F) Editorial synthesisbasis

Climate-relative calendar

Frost and transplant rules become local dates when climate data is available. Cultivar maturity and crop condition are never replaced by a fabricated date.

Plant Pumpkin / winter squash7 days after last spring frost to 28 days after last spring frost Direct sourceEditorial synthesisbasisRecommended: Soil temperature at least 10 °C (50 °F) for 3 consecutive days. Editorial synthesisbasis
Begin harvesting Pumpkin / winter squash80 days after sowing to 110 days after sowing Planning estimatebasis
Finish harvesting Pumpkin / winter squash14 days after first harvest to 30 days after first harvest
Remove Pumpkin / winter squash cropthe expected end of harvest to 7 days after the expected end of harvest

Agronomy release agronomy-2026-07-11-r1 · reviewed 2026-07-11 by Gardeningist agronomic research synthesis. Direct-source links indicate close source support; synthesis and planning estimates are labeled separately.

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