When to Plant in New Hampshire

New Hampshire gardeners work with a classic New England climate, where the growing season is shaped by the White Mountains and a short but beautiful summer. The state's varied topography leads to significant differences in frost dates over short distances.

Success in the Granite State requires careful planning and a bit of resilience. By choosing short-season varieties and getting an early start indoors, you can enjoy a productive harvest even in the higher elevations.

Common Mistakes

Planting warm-season crops too early — late May frosts are common across most of the state.
Ignoring microclimates — elevation changes in NH can mean frost in one yard and not in another nearby.
Not starting seeds indoors — with a limited season, indoor starts are essential for many crops.
Neglecting the fall season — the cool autumn air in NH is perfect for late-season greens and root crops.

FAQ

What is the last frost date?

Last frost ranges from mid-May in the south to early June in the northern mountain regions.

When should I start tomatoes indoors in New Hampshire?

Early to mid-April is usually the best time to start seeds indoors in New Hampshire.

Can I plant before the last frost?

Yes, hardy crops like peas, kale, and onions can handle the cool spring weather common in NH.

Why does timing vary so much within New Hampshire?

Elevation and the distance from the coast are the primary factors in NH's varied frost dates.

What if I live in a frost-free area?

New Hampshire has no frost-free areas; the entire state experiences cold winters.

How does Plan My Garden create my schedule?

We use your location data to provide a planting plan tailored to your specific elevation and climate.