When to plant Winter squash in Pennsylvania
In fall, from June 1 – July 1 in Allentown to July 1 – Aug 1 in Philadelphia.
USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.
| Place | Spring | Fall |
|---|---|---|
| Allentown | — | June 1 – July 1 |
| Altoona | — | June 1 – July 1 |
| Baldwin | — | June 10 – July 10 |
| Berwick | — | June 1 – July 1 |
| Bethel Park | — | June 10 – July 10 |
| Bethlehem | — | June 1 – July 1 |
| Bloomsburg | — | June 1 – July 1 |
| Butler | — | June 1 – July 1 |
| Carlisle | — | June 1 – July 1 |
| Chambersburg | — | June 1 – July 1 |
| Chester | — | July 1 – Aug 1 |
| Coatesville | — | June 1 – July 1 |
| Columbia | — | June 1 – July 1 |
| Darby | — | June 20 – July 20 |
| Dunmore | — | June 1 – July 1 |
| Easton | — | June 1 – July 1 |
| Elizabethtown | — | June 10 – July 10 |
| Emmaus | — | June 1 – July 1 |
| Ephrata | — | June 1 – July 1 |
| Erie | — | June 10 – July 10 |
| Franklin Park | — | June 10 – July 10 |
| Greensburg | — | June 1 – July 1 |
| Hanover | — | June 1 – July 1 |
| Harrisburg | — | June 1 – July 1 |
| Hazleton | — | June 1 – July 1 |
| Hermitage | — | June 1 – 15 |
| Indiana | — | June 1 – July 1 |
| Jefferson Hills | — | June 10 – July 10 |
| Johnstown | — | June 1 – July 1 |
| Kingston | — | June 1 – July 1 |
| Lancaster | — | June 1 – July 1 |
| Lansdale | — | June 10 – July 10 |
| Lansdowne | — | June 20 – July 20 |
| Lebanon | — | June 1 – July 1 |
| Lower Burrell | — | June 10 – July 10 |
| McKeesport | — | June 1 – July 1 |
| Meadville | — | June 1 – July 1 |
| Mechanicsburg | — | June 10 – July 10 |
| Monroeville | — | June 1 – July 1 |
| Munhall | — | June 20 – July 20 |
| Murrysville | — | June 1 – July 1 |
| Nanticoke | — | June 1 – July 1 |
| New Castle | — | June 1 – July 1 |
| New Kensington | — | June 10 – July 10 |
| Norristown | — | June 10 – July 10 |
| Northampton | — | June 1 – July 1 |
| Philadelphia | — | July 1 – Aug 1 |
| Phoenixville | — | June 10 – July 10 |
| Pittsburgh | — | June 10 – July 10 |
| Plum | — | June 10 – July 10 |
| Pottstown | — | June 1 – July 1 |
| Pottsville | — | June 1 – July 1 |
| Reading | — | June 10 – July 10 |
| Scranton | — | June 1 – July 1 |
| Sharon | — | June 1 – July 1 |
| St. Marys | — | June 1 – July 1 |
| State College | — | June 10 – July 10 |
| Washington | — | June 1 – July 1 |
| Waynesboro | — | June 1 – July 1 |
| West Chester | — | June 1 – July 1 |
| West Mifflin | — | June 10 – July 10 |
| Whitehall | — | June 10 – July 10 |
| Wilkes-Barre | — | June 1 – July 1 |
| Wilkinsburg | — | June 20 – July 20 |
| Williamsport | — | June 1 – July 1 |
| Wyomissing | — | June 10 – July 10 |
| Yeadon | — | June 20 – July 20 |
| York | — | June 1 – July 1 |
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), tables 4 and 5. Frost dates: NOAA U.S. Climate Normals 1991–2020. “—” means the place's frost date is outside the table. The full USDA table for winter squash.