When to Plant Potatoes in New Hampshire
In a typical New Hampshire location, sow outdoors Apr 5 – Apr 19. Across the state, the outdoor planting window starts as early as Mar 24 in Salem and as late as Apr 16 in Berlin.
Plant seed potatoes 2-4 weeks before last frost, as soon as soil can be worked and is above 45F; light frost on emerging foliage is usually tolerated.
Potatoes Planting Dates by City
| City | Direct sow |
|---|---|
| Manchester | Apr 2 – Apr 16 |
| Nashua | Apr 2 – Apr 16 |
| Concord | Apr 10 – Apr 24 |
| East Concord | Apr 10 – Apr 24 |
| Derry Village | Apr 2 – Apr 16 |
| Dover | Apr 5 – Apr 19 |
| Rochester | Apr 2 – Apr 16 |
| Salem | Mar 24 – Apr 7 |
| Merrimack | Apr 2 – Apr 16 |
| Keene | Apr 16 – Apr 30 |
| Derry | Apr 2 – Apr 16 |
| Portsmouth | Apr 6 – Apr 20 |
| Bedford | Mar 24 – Apr 7 |
| Laconia | Apr 2 – Apr 16 |
| Lebanon | Apr 11 – Apr 25 |
| Windham | Apr 5 – Apr 19 |
| Claremont | Apr 16 – Apr 30 |
| Pelham | Apr 5 – Apr 19 |
| Somersworth | Apr 2 – Apr 16 |
| Londonderry | Mar 24 – Apr 7 |
| Durham | Apr 10 – Apr 24 |
| Hampton | Apr 6 – Apr 20 |
| Berlin | Apr 16 – Apr 30 |
| Exeter | Apr 6 – Apr 20 |
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 potatoes in New Hampshire?
In a typical New Hampshire location, sow outdoors Apr 5 – Apr 19. Across the state, the outdoor planting window starts as early as Mar 24 in Salem and as late as Apr 16 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 potatoes take to grow?
Potatoes typically take 70–120 days from planting to harvest. Plant seed potatoes 2-4 weeks before last frost, as soon as soil can be worked and is above 45F; light frost on emerging foliage is usually tolerated.
Other Crops in New Hampshire
- Tomatoes
- Peppers
- Eggplant
- Cucumbers
- Zucchini
- Winter Squash
- Pumpkins
- Watermelon
- Cantaloupe
- Corn
- Green Beans
- Peas
- Lettuce
- Spinach
- Kale
- Arugula
- Swiss Chard
- Broccoli
- Cauliflower
- Cabbage
- Brussels Sprouts
- Carrots
- Beets
- Radishes
- Turnips
- Onions
- Garlic
- Sweet Potatoes
- Asparagus
- Basil
- Cilantro
- Parsley
- Dill
- Oregano
- Thyme
- Sunflowers
- Zinnias
- Marigolds
- Cosmos
- Nasturtiums
- Dahlias
When to plant potatoes in other states