When should I plant pumpkins to have them ready for Halloween?

Count backward from October 15–25 using the days-to-maturity for your variety, then add 2 weeks as a buffer. For a 100-day variety: plant by mid-July. For a 90-day variety: plant by late July. In zones 4–5 where spring planting is limited by late frosts, start the maximum allowable number of days from last frost (transplant in late May or June) and select the shortest-season variety that meets your size goal. Per Penn State Extension, timing is "the most important factor in having pumpkins ready for fall."

Why are my pumpkin fruits turning yellow and rotting before they mature?

This is almost always a pollination problem. Without adequate pollen transfer from male to female flowers, the fruit begins to develop (female flowers close, small fruit swells) but then lacks the hormonal trigger from fertilization to continue growing. The small fruit yellows and drops within a week. Improve bee access (avoid insecticide applications during flowering hours), or hand-pollinate. Occasionally, overwatering early in fruit development causes similar symptoms due to root issues.

Can I grow pumpkins in containers?

Small or "bush" varieties like 'Bushkin' or 'Small Sugar' can be grown in very large containers (25+ gallons per plant) with excellent drainage, but vine management becomes difficult. Most growers find the yield-to-effort ratio of container pumpkins disappointing compared to in-ground growing. If space is the constraint, small varieties in raised beds produce more reliably than containers.

How do I know when a pumpkin is ripe?

Three checks: the skin is fully colored (orange on orange varieties, or the characteristic color of the specific variety); the rind is hard and resists a fingernail; and the stem has dried and turned corky. The vine immediately near the fruit often dies back before the rest of the plant. Thumping is unreliable for pumpkins compared to watermelons — use the visual and tactile checks instead.

Home/Vegetables/Pumpkin Care: From Seed to Carved Jack-O'-Lantern

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Pumpkin Care: From Seed to Carved Jack-O'-Lantern

Q: Which pumpkin species are you growing?

What we call "pumpkins" are actually spread across three Cucurbita species, and the differences matter for variety selection and disease resistance.

Growing Cucurbita pepo, C. maxima, and C. moschata from seed to harvest — variety selection, vine management, pollination, and curing for long storage.

By Thomas Joseph Published 2026-06-11 Updated 2026-06-13 Reviewed by Thomas Joseph 8 min read

Orange pumpkins ripening on sprawling vines in a sunny fall garden — Photo: Unsplash

Which pumpkin species are you growing?

What we call "pumpkins" are actually spread across three Cucurbita species, and the differences matter for variety selection and disease resistance.

Cucurbita pepo — carving and small pie types

The classic orange jack-o'-lantern is C. pepo. 'Jack-O-Lantern', 'Howden', 'Cinderella' (sometimes), and small pie pumpkins like 'Sugar Pie' are all C. pepo. Most are ready in 90–100 days. Per Penn State Extension, C. pepo varieties are generally less resistant to squash vine borers than C. moschata, which is an important consideration in the mid-Atlantic and Southeast.

Cucurbita maxima — giant and specialty types

'Atlantic Giant' (the competition pumpkin), 'Jarrahdale' (blue-gray), 'Hubbard', and 'Candy Roaster' are C. maxima. These often need 100–120+ days. They tend to have sweeter, denser flesh than C. pepo but require a long, warm growing season to reach full size.

Cucurbita moschata — butternut-type and disease-resistant varieties

Most famously butternut squash, but also 'Long Island Cheese' and 'Seminole'. Per University of Minnesota Extension, C. moschata varieties show "greater resistance to squash vine borer" than the other species, making them a better choice in areas with high borer pressure. They typically need 100–110 days and are most productive in the South and warm parts of the mid-Atlantic.

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