When to Plant Corn in Delaware
In a typical Delaware location, sow outdoors Apr 7 – Apr 21. Across the state, the outdoor planting window starts as early as Mar 30 in Claymont and as late as Apr 19 in Hockessin.
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 |
|---|---|
| Wilmington | Apr 7 – Apr 21 |
| Dover | Apr 4 – Apr 18 |
| Newark | Apr 7 – Apr 21 |
| Middletown | Apr 7 – Apr 21 |
| Bear | Apr 7 – Apr 21 |
| Brookside | Apr 7 – Apr 21 |
| Glasgow | Apr 7 – Apr 21 |
| Hockessin | Apr 19 – May 3 |
| Smyrna | Apr 4 – Apr 18 |
| Pike Creek Valley | Apr 7 – Apr 21 |
| Milford | Apr 11 – Apr 25 |
| Claymont | Mar 30 – Apr 13 |
| North Star | Apr 7 – Apr 21 |
| Pike Creek | Apr 7 – Apr 21 |
| Wilmington Manor | Apr 7 – Apr 21 |
| Seaford | Apr 11 – Apr 25 |
| Georgetown | Apr 4 – Apr 18 |
| Elsmere | Apr 7 – Apr 21 |
| Edgemoor | Apr 7 – Apr 21 |
| New Castle | Apr 7 – Apr 21 |
Showing the 20 most populous of 20 Delaware cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all Delaware cities.
Frequently Asked Questions
When should I plant corn in Delaware?
In a typical Delaware location, sow outdoors Apr 7 – Apr 21. Across the state, the outdoor planting window starts as early as Mar 30 in Claymont and as late as Apr 19 in Hockessin.
When is the last frost in Delaware?
The average last spring frost in Delaware ranges from March 30 in Claymont to April 19 in Hockessin, 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 Delaware
- 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