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Can You Grow Rosemary in Pennsylvania?

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

Grows well here

Rosemary grows as a perennial here — establish it once and it will thrive for years.

Plant zones

6a–11b

Pennsylvania last frost

early April

Pennsylvania first frost

late October

Days to harvest

Perennial

About Rosemary

Rosemary is a Mediterranean herb that thrives in poor well-drained soil and full sun once established.

Plant in the sunniest most well-drained spot. Excellent in containers — bring indoors in winter in cold zones. Drought-tolerant once established. Avoid overwatering.

Full rosemary 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.

See what grows well in Pennsylvania →

Frequently asked questions

Can you grow Rosemary in Pennsylvania?

Rosemary grows as a perennial here — establish it once and it will thrive for years.

What zone is Pennsylvania?

Pennsylvania spans USDA Zone 6a (5a, 5b, 6a, 6b).

When do you plant Rosemaries in Pennsylvania?

See the planting guide for Rosemary — timing depends on your exact frost date.