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Can You Grow Cauliflower in Pennsylvania?

US · USDA Zone 6a · zones 5a, 5b, 6a, 6b

Grows well here

Cauliflower grows well here if you time it for your cool season — fall crops are often more reliable than spring.

Plant zones

2a–11b

Pennsylvania last frost

early April

Pennsylvania first frost

late October

Days to harvest

60–100 days

When to plant Cauliflowers in Pennsylvania

Start indoors

Feb 17

Transplant

Apr 1

Harvest

May 31 – Jul 10

Dates are approximate, based on Pennsylvania's average frost dates. Your exact yard may vary by microclimate.

About Cauliflower

Cauliflower is one of the most rewarding cool-season brassicas — and one of the trickiest. It forms a dense white head that needs steady cool weather and consistent moisture.

Start indoors 6 weeks before last frost; transplant 2-3 weeks before last frost. Blanch heads by tying leaves over them once they're 2-3 inches across. Harvest before curds loosen.

Full cauliflower growing guide →

Gardening in Pennsylvania

Pennsylvania has a humid continental climate. Philadelphia is Zone 7a; Pittsburgh is Zone 6a; northern Pennsylvania is Zone 5a-5b. Four distinct seasons with a 6-7 month growing window.