When to Plant Corn in Pennsylvania
In a typical Pennsylvania location, sow outdoors Apr 20 – May 4. Across the state, the outdoor planting window starts as early as Mar 30 in Philadelphia and as late as May 15 in Hermitage.
Direct sow at last frost to 2 weeks after, once soil reaches 60F; does not transplant well. Succession sow every 2 weeks.
Corn Planting Dates by City
| City | Direct sow |
|---|---|
| Philadelphia | Mar 30 – Apr 13 |
| Pittsburgh | Apr 24 – May 8 |
| Allentown | Apr 20 – May 4 |
| Erie | Apr 26 – May 10 |
| Reading | Apr 14 – Apr 28 |
| Scranton | Apr 23 – May 7 |
| Bethlehem | Apr 20 – May 4 |
| Bensalem | Apr 21 – May 5 |
| Lancaster | Apr 19 – May 3 |
| Abington | Apr 11 – Apr 25 |
| Levittown | Apr 21 – May 5 |
| Havertown | Mar 30 – Apr 13 |
| Harrisburg | Apr 15 – Apr 29 |
| Altoona | Apr 25 – May 9 |
| York | Apr 26 – May 10 |
| State College | Apr 20 – May 4 |
| Wilkes-Barre | Apr 23 – May 7 |
| Norristown | Apr 8 – Apr 22 |
| Chester | Mar 30 – Apr 13 |
| Mount Lebanon | Apr 18 – May 2 |
| Bethel Park | Apr 18 – May 2 |
| Wayne | Apr 8 – Apr 22 |
| Radnor | Apr 8 – Apr 22 |
| Williamsport | Apr 25 – May 9 |
| Monroeville | Apr 22 – May 6 |
| Cranberry Township | Apr 8 – Apr 22 |
| Drexel Hill | Apr 2 – Apr 16 |
| Plum | Apr 16 – Apr 30 |
| Back Mountain | Apr 23 – May 7 |
| Easton | Apr 18 – May 2 |
Showing the 30 most populous of 121 Pennsylvania cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all Pennsylvania cities.
Frequently Asked Questions
When should I plant corn in Pennsylvania?
In a typical Pennsylvania location, sow outdoors Apr 20 – May 4. Across the state, the outdoor planting window starts as early as Mar 30 in Philadelphia and as late as May 15 in Hermitage.
When is the last frost in Pennsylvania?
The average last spring frost in Pennsylvania ranges from March 30 in Philadelphia to May 15 in Hermitage, based on NOAA 1991–2020 climate normals.
How long do corn take to grow?
Corn typically take 60–100 days from planting to harvest. Direct sow at last frost to 2 weeks after, once soil reaches 60F; does not transplant well. Succession sow every 2 weeks.
Other Crops in Pennsylvania
- Tomatoes
- Peppers
- Eggplant
- Cucumbers
- Zucchini
- Winter Squash
- Pumpkins
- Watermelon
- Cantaloupe
- Green Beans
- Peas
- Lettuce
- Spinach
- Kale
- Arugula
- Swiss Chard
- Broccoli
- Cauliflower
- Cabbage
- Brussels Sprouts
- Carrots
- Beets
- Radishes
- Turnips
- Onions
- Garlic
- Potatoes
- Sweet Potatoes
- Asparagus
- Basil
- Cilantro
- Parsley
- Dill
- Oregano
- Thyme
- Sunflowers
- Zinnias
- Marigolds
- Cosmos
- Nasturtiums
- Dahlias
When to plant corn in other states