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Can You Grow Florence Fennel in Pennsylvania?

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

Grows well here

Florence fennel grows well here — it likes warm days and cool nights for bulb development.

Plant zones

4a–9b

Pennsylvania last frost

early April

Pennsylvania first frost

late October

Days to harvest

65–90 days

When to plant Florence Fennels in Pennsylvania

Direct sow

Apr 1

Harvest

Jun 5 – Jun 30

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

About Florence Fennel

Florence fennel produces an anise-flavored bulb at the base — sliced raw into salads or roasted, it is a Mediterranean staple. Note: fennel inhibits nearby plant growth, so keep it isolated in the garden.

Direct sow after last frost — fennel dislikes transplanting. Sow 1/4 inch deep, thin to 12 inches. Keep soil consistently moist while bulbing. Harvest when bulbs are 3 inches wide. Do NOT plant near tomatoes or peppers.

Full florence fennel 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.