When to plant bok choy in Pennsylvania
Pennsylvania spans USDA zones 5b–7b, so the right time to plant bok choy shifts by weeks across the state. The window to transplant seedlings outdoors runs from about March 9 in Philadelphia to April 24 in Hermitage — below are local dates for 86 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Transplant out |
|---|---|---|---|---|
| Philadelphia | 7b | March 30 | November 17 | March 9 – March 30 |
| Pittsburgh | 6b | April 18 | October 28 | March 28 – April 18 |
| Allentown | 7a | April 20 | October 24 | March 30 – April 20 |
| Reading | 7a | April 14 | October 29 | March 24 – April 14 |
| Erie | 7a | April 26 | November 4 | April 5 – April 26 |
| Bethlehem | 7a | April 20 | October 24 | March 30 – April 20 |
| Scranton | 6b | April 23 | October 20 | April 2 – April 23 |
| Lancaster | 7a | April 19 | October 24 | March 29 – April 19 |
Bok Choy in Pennsylvania: FAQ
When can I plant bok choy in Pennsylvania?
Across Pennsylvania, the time to transplant bok choy spans roughly March 9 in Philadelphia to April 24 in Hermitage, each following that city's local frost dates.
Does the bok choy planting date vary across Pennsylvania?
Yes. Pennsylvania publishes 86 cities with their own frost dates, so the right bok choy planting window shifts by weeks between the warmest and coldest parts of the state — use your city's page for the exact dates.
How long does bok choy take to grow in Pennsylvania?
Bok Choy takes about 45–60 days to reach harvest once planted — check that this fits inside your city's frost-free season on its place page.
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