When to Plant Corn in New Hampshire
In a typical New Hampshire location, sow outdoors May 3 – May 17. Across the state, the outdoor planting window starts as early as Apr 21 in Salem and as late as May 14 in Berlin.
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 |
|---|---|
| Manchester | Apr 30 – May 14 |
| Nashua | Apr 30 – May 14 |
| Concord | May 8 – May 22 |
| East Concord | May 8 – May 22 |
| Derry Village | Apr 30 – May 14 |
| Dover | May 3 – May 17 |
| Rochester | Apr 30 – May 14 |
| Salem | Apr 21 – May 5 |
| Merrimack | Apr 30 – May 14 |
| Keene | May 14 – May 28 |
| Derry | Apr 30 – May 14 |
| Portsmouth | May 4 – May 18 |
| Bedford | Apr 21 – May 5 |
| Laconia | Apr 30 – May 14 |
| Lebanon | May 9 – May 23 |
| Windham | May 3 – May 17 |
| Claremont | May 14 – May 28 |
| Pelham | May 3 – May 17 |
| Somersworth | Apr 30 – May 14 |
| Londonderry | Apr 21 – May 5 |
| Durham | May 8 – May 22 |
| Hampton | May 4 – May 18 |
| Berlin | May 14 – May 28 |
| Exeter | May 4 – May 18 |
Showing the 24 most populous of 24 New Hampshire cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all New Hampshire cities.
Frequently Asked Questions
When should I plant corn in New Hampshire?
In a typical New Hampshire location, sow outdoors May 3 – May 17. Across the state, the outdoor planting window starts as early as Apr 21 in Salem and as late as May 14 in Berlin.
When is the last frost in New Hampshire?
The average last spring frost in New Hampshire ranges from April 21 in Salem to May 14 in Berlin, 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 New Hampshire
- 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