March 1, 2026

When to Plant Pumpkins by Zone

Growing your own pumpkins for fall decorating and pies is hugely satisfying. But pumpkins have a long growing season, and the timing has to work backward from your target harvest date. For most people, that target is late September or early October, right before Halloween.

Pumpkin planting dates by zone

Counting backward from Halloween

The simplest way to figure out your planting date: check the "days to maturity" on your seed packet and count backward from October 1. Add 1-2 weeks as a buffer for slow germination or cool stretches.

For example, if you're growing a 100-day variety and want pumpkins by October 1, count back 100 days plus a 10-day buffer. That puts your planting date around June 15. If you're in zone 3 where the season ends early, you'd plant as soon as it's warm enough (late May) and choose a faster variety.

Pumpkin varieties by days to maturity

Starting seeds indoors vs. direct sowing

In zones 3-5, starting pumpkin seeds indoors 2-3 weeks before your outdoor planting date can help. Like all squash family crops, pumpkins don't love being transplanted, so use peat pots and handle seedlings gently.

In zones 6 and warmer, direct sowing works perfectly. Plant seeds 1 inch deep in hills of 3-4 seeds, then thin to the 2 strongest seedlings per hill once they have a few true leaves.

Soil and site requirements

Pumpkins are heavy feeders that need rich, fertile soil. Work in several inches of compost before planting. They also need full sun (8+ hours) and good air circulation to prevent powdery mildew.

The ideal soil temperature for pumpkin germination is 65-85°F. Below 60°F, seeds rot instead of sprouting.

Pollination matters

Pumpkin plants produce separate male and female flowers. Male flowers appear first, usually about a week before female flowers. Each female flower is open for only one day, and it needs to be visited by bees carrying pollen from a male flower during that window.

If you notice flowers falling off without producing fruit, it's usually either because they're male flowers (which is normal) or because pollination failed. In hot weather (above 95°F), pollen viability drops and fruit set suffers. This is why gardeners in zones 8-10 sometimes plant later so that flowering happens in slightly cooler weather.

You can hand-pollinate by transferring pollen from a male flower to a female flower using a small brush or cotton swab. Do this in the morning when flowers are open.

Watering and feeding

Pumpkins need about 1 inch of water per week, increasing to 1.5 inches when fruit is developing. Water at the base of the plant, not overhead. Wet leaves promote powdery mildew, which is the most common pumpkin disease.

Side-dress with compost or balanced fertilizer when vines start to run, and again when fruit begins to set. Once fruit is established and growing, switch to a low-nitrogen fertilizer (too much nitrogen at this stage promotes vine growth at the expense of fruit).

Harvesting and storing

Pumpkins are ready when the skin is hard (you can't dent it with a fingernail), the stem is dry and corky, and the fruit has reached full color. Cut pumpkins from the vine with several inches of stem attached. Don't carry pumpkins by the stem because it can break off.

Cure pumpkins in the sun for 7-10 days (or in a warm, dry spot if rain threatens). After curing, store in a cool (50-55°F), dry place. Properly cured pumpkins last 2-3 months.

Pumpkins grow well alongside many vegetables. Check out our companion planting guide for squash for the best pairings.

Related: When to Plant Zucchini Outdoors | Fall Garden Planting Guide