When to Plant in Philadelphia, PA

Philadelphia enjoys one of Pennsylvania's longest growing seasons — Zone 7a with a typical last frost around April 11. The Delaware Valley's location moderates winter temperatures compared to central or western PA, giving Philly gardeners a head start.

The city and suburbs support diverse gardening approaches from rooftop and community gardens in the urban core to spacious suburban lots. The Philly-area growing season from late March through October is excellent for a wide range of crops.

FAQ

When is the last frost date in Philadelphia, PA?

Philadelphia's average last frost date is around April 11 — earlier than central Pennsylvania due to the Delaware Valley's urban heat island and coastal influence.

What grows best in Philadelphia?

Philadelphia's climate supports excellent tomatoes, peppers, and squash in summer. Fall is superb for broccoli, kale, lettuce, and carrots. Cool-season crops thrive in March–May and August–October.

When should I plant tomatoes in Philadelphia?

Start seeds indoors late February. Transplant outdoors after April 8th. Philadelphia's longer season versus central PA gives you more time for full-season varieties.

How does Plan My Garden help Philadelphia gardeners?

Enter your Philly zip code for exact planting dates calibrated to the Delaware Valley's growing calendar.

Frost dates for Philadelphia ZIP codes

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