What Can Grow in Manchester, NH

Manchester on the Merrimack River has a productive growing season for New England with warmer conditions than northern NH.

Manchester, NH is in USDA Hardiness Zone 5b. The growing season lasts about 143 days, with last frost around May 3 and first fall frost around October 20. Top crops include tomatoes, peppers, beans.

5bUSDA Zone
143 daysFrost-Free
May 3Last Frost
October 20First Frost
🌱 What Grows in Manchester
tomatoespeppersbeanscornbroccoliapples
💡 Planting Tips

River valley warmth. Start seeds indoors February. Plant warm crops after May 10.

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📍 Full Zone 5b Guide 🌎 New Hampshire Planting Guide

Frequently Asked Questions

Manchester, NH is in USDA Plant Hardiness Zone 5b. Manchester on the Merrimack River has a productive growing season for New England with warmer conditions than northern NH.

The average last spring frost in Manchester is around May 3. The first fall frost typically arrives around October 20, giving a frost-free growing season of approximately 143 days.

Manchester's Zone 5b climate supports growing tomatoes, peppers, beans, corn, broccoli, apples. River valley warmth. Start seeds indoors February. Plant warm crops after May 10.

In Manchester, start with cool-season crops like lettuce, spinach, and broccoli a few weeks before the last frost date of May 3. Warm-season crops like tomatoes and peppers should go in after all frost risk has passed.