New Hampshire Planting Zones & Schedule

New Hampshire’s USDA growing zones range from Zone 3 to Zone 6, depending on where you are in the state. The majority of the state falls in Zones 5a, 5b, and 6a where warm-season crops should be started early indoors and transplanted after the final frost.

As you move north of Littleton, it gets a little colder. The northernmost parts of New Hampshire are in Zones 3b, 4a, and 4b, where it’s best to focus on cold-hardy crops broccoli, cabbage, leafy greens, and root vegetables.

 

New Hampshire Last & First Frost Dates

  • *Keep in mind that frost can occur before or after these dates. Watch your local weather to determine the best time to plant.

  • The growing season in New Hampshire lasts for around 150 days on average, but the timing depends on the region. Refer to the planting schedules below to determine the best timing for your zone.

Zone 3 Planting Schedule

Zone 4 Planting Schedule

Zone 5 Planting Schedule

Zone 6 Planting Schedule