Bield:Farm
State agricultural overview

New Hampshire crop calendar.

Zone 5bRange 3b to 6b140-day seasonLast frost May 15First frost October 1

16 primary crops with planting windows for New Hampshire. Calendar timing is anchored to 5b dominant hardiness zone and a 140-day growing season — verify against UNH Cooperative Extension for variety- and county-specific guidance.

Row Crop · New Hampshire

Vegetables · New Hampshire

  • Cucumbers
    primary
    Spring: May 29 – July 3
  • Peppers
    primary
    Spring: June 5 – June 26
  • Potatoes
    primary
    Spring: May 1 – May 22
    Fall: July 18 – August 2
  • Pumpkins
    primary
    Spring: June 5 – July 3
  • Sweet Corn
    primary
    Spring: May 15 – June 19
  • Tomatoes
    primary
    Spring: May 29 – June 19

Forages · New Hampshire

  • Alfalfa
    primary
    Spring: May 8 – June 5
    Fall: August 2 – August 17
  • Clover
    primary
    Spring: April 24 – May 22
    Fall: August 2 – August 17

Cover Crops · New Hampshire

  • Brassicas
    primary
    Fall: July 18 – August 2
  • Buckwheat
    primary
    Spring: July 10 – August 7
  • Cereal Oats
    primary
    Spring: May 8 – June 5
    Fall: August 2 – August 17
  • Winter Rye
    primary
    Fall: September 24 – October 15

Frost-date reference — New Hampshire

Last frost (spring)
May 15
First frost (fall)
October 1
Growing season
140 days
Hardiness zone
5b

Frost dates are NOAA / NCDC climate normals — county-level variation can shift these by 2–4 weeks. The New Hampshire extension service publishes county-specific frost data: UNH Cooperative Extension.

New Hampshire soil-temp alerts.

Bield: Farm ties weather and soil-temperature stations in your county to crop planting thresholds — get notified the day soil temp clears the threshold for your target.

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