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When to plant lime in Pennsylvania

Pennsylvania spans USDA zones 5b–7b, so the right time to plant lime shifts by weeks across the state. The window to transplant seedlings outdoors runs from about April 6 in Philadelphia to May 22 in Hermitage — below are local dates for 86 cities, each computed from its own frost dates.

In Philadelphiathe lime transplant out window (April 6–April 13) has passed for this year.
CityZoneLast frostFirst frostTransplant out
Philadelphia7bMarch 30November 17April 6 – April 13
Pittsburgh6bApril 18October 28April 25 – May 2
Allentown7aApril 20October 24April 27 – May 4
Reading7aApril 14October 29April 21 – April 28
Erie7aApril 26November 4May 3 – May 10
Bethlehem7aApril 20October 24April 27 – May 4
Scranton6bApril 23October 20April 30 – May 7
Lancaster7aApril 19October 24April 26 – May 3

Lime in Pennsylvania: FAQ

When can I plant lime in Pennsylvania?

Across Pennsylvania, the time to transplant lime spans roughly April 6 in Philadelphia to May 22 in Hermitage, each following that city's local frost dates.

Does the lime planting date vary across Pennsylvania?

Yes. Pennsylvania publishes 86 cities with their own frost dates, so the right lime planting window shifts by weeks between the warmest and coldest parts of the state — use your city's page for the exact dates.

Planting reminders

Never miss a window in your area

An email when it’s time to start seeds, transplant, and sow — timed to your frost dates. Double opt-in, one-click unsubscribe, no spam.

Lime planting guide →All Pennsylvania cities →Pennsylvania planting calendar →
When to Plant Lime in Pennsylvania — Frost-Based Dates by City — BlissGarden