When to plant Potatoes in Pennsylvania
In spring, from Feb 20 – Mar 20 in Chester to Apr 1 – June 1 in St. Marys.
In fall, from May 1 – June 15 in Hermitage to Aug 10 – Sept 15 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 | Mar 15 – Apr 10 | June 15 – July 15 |
| Altoona | Mar 15 – Apr 10 | June 15 – July 15 |
| Baldwin | Mar 15 – Apr 10 | July 20 – Aug 10 |
| Berwick | Mar 20 – May 10 | May 15 – June 15 |
| Bethel Park | Mar 15 – Apr 10 | July 20 – Aug 10 |
| Bethlehem | Mar 15 – Apr 10 | June 15 – July 15 |
| Bloomsburg | Mar 20 – May 10 | June 15 – July 15 |
| Butler | Apr 1 – June 1 | May 15 – June 15 |
| Carlisle | Mar 15 – Apr 10 | June 15 – July 15 |
| Chambersburg | Mar 15 – Apr 10 | June 15 – July 15 |
| Chester | Feb 20 – Mar 20 | Aug 10 – Sept 15 |
| Coatesville | Mar 15 – Apr 10 | June 15 – July 15 |
| Columbia | Mar 20 – May 10 | May 15 – June 15 |
| Darby | Feb 20 – Mar 20 | July 25 – Aug 20 |
| Dunmore | Mar 15 – Apr 10 | June 15 – July 15 |
| Easton | Mar 15 – Apr 10 | June 15 – July 15 |
| Elizabethtown | Mar 10 – Apr 1 | July 20 – Aug 10 |
| Emmaus | Mar 15 – Apr 10 | June 15 – July 15 |
| Ephrata | Mar 15 – Apr 10 | June 15 – July 15 |
| Erie | Mar 20 – May 10 | July 20 – Aug 10 |
| Franklin Park | Mar 15 – Apr 10 | July 20 – Aug 10 |
| Greensburg | Mar 20 – May 10 | May 15 – June 15 |
| Hanover | Mar 15 – Apr 10 | June 15 – July 15 |
| Harrisburg | Mar 10 – Apr 1 | June 15 – July 15 |
| Hazleton | Mar 20 – May 10 | June 15 – July 15 |
| Hermitage | Apr 1 – June 1 | May 1 – June 15 |
| Indiana | Apr 1 – June 1 | May 15 – June 15 |
| Jefferson Hills | Mar 15 – Apr 10 | July 20 – Aug 10 |
| Johnstown | Mar 20 – May 10 | June 15 – July 15 |
| Kingston | Mar 15 – Apr 10 | June 15 – July 15 |
| Lancaster | Mar 15 – Apr 10 | June 15 – July 15 |
| Lansdale | Mar 10 – Apr 1 | July 20 – Aug 10 |
| Lansdowne | Feb 20 – Mar 20 | July 25 – Aug 20 |
| Lebanon | Mar 15 – Apr 10 | June 15 – July 15 |
| Lower Burrell | Mar 15 – Apr 10 | July 20 – Aug 10 |
| McKeesport | Mar 20 – May 10 | June 15 – July 15 |
| Meadville | Mar 20 – May 10 | June 15 – July 15 |
| Mechanicsburg | Mar 10 – Apr 1 | July 20 – Aug 10 |
| Monroeville | Mar 15 – Apr 10 | June 15 – July 15 |
| Munhall | Mar 10 – Apr 1 | July 25 – Aug 20 |
| Murrysville | Mar 15 – Apr 10 | June 15 – July 15 |
| Nanticoke | Apr 1 – June 1 | May 15 – June 15 |
| New Castle | Mar 20 – May 10 | June 15 – July 15 |
| New Kensington | Mar 15 – Apr 10 | July 20 – Aug 10 |
| Norristown | Mar 10 – Apr 1 | July 20 – Aug 10 |
| Northampton | Mar 15 – Apr 10 | June 15 – July 15 |
| Philadelphia | Feb 20 – Mar 20 | Aug 10 – Sept 15 |
| Phoenixville | Mar 15 – Apr 10 | July 20 – Aug 10 |
| Pittsburgh | Mar 15 – Apr 10 | July 20 – Aug 10 |
| Plum | Mar 15 – Apr 10 | July 20 – Aug 10 |
| Pottstown | Mar 15 – Apr 10 | June 15 – July 15 |
| Pottsville | Mar 20 – May 10 | June 15 – July 15 |
| Reading | Mar 10 – Apr 1 | July 20 – Aug 10 |
| Scranton | Mar 15 – Apr 10 | June 15 – July 15 |
| Sharon | Mar 20 – May 10 | June 15 – July 15 |
| St. Marys | Apr 1 – June 1 | May 15 – June 15 |
| State College | Mar 15 – Apr 10 | July 20 – Aug 10 |
| Washington | Mar 15 – Apr 10 | June 15 – July 15 |
| Waynesboro | Mar 15 – Apr 10 | June 15 – July 15 |
| West Chester | Mar 20 – May 10 | June 15 – July 15 |
| West Mifflin | Mar 15 – Apr 10 | July 20 – Aug 10 |
| Whitehall | Mar 15 – Apr 10 | July 20 – Aug 10 |
| Wilkes-Barre | Mar 15 – Apr 10 | June 15 – July 15 |
| Wilkinsburg | Mar 10 – Apr 1 | July 25 – Aug 20 |
| Williamsport | Mar 15 – Apr 10 | June 15 – July 15 |
| Wyomissing | Mar 10 – Apr 1 | July 20 – Aug 10 |
| Yeadon | Feb 20 – Mar 20 | July 25 – Aug 20 |
| York | Mar 20 – May 10 | June 15 – July 15 |
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), tables 4 and 5. Frost dates: NOAA U.S. Climate Normals 1991–2020. The full USDA table for potatoes.