Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Manchester, NH, based on the USDA Hardiness Zone 6a.
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Manchester, NH Frost Dates & Growing Season
Last Spring Frost Date for Manchester, NH
The average last frost date in spring for Manchester is May 13th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until May 27th before moving plants outdoors. Waiting these extra few weeks significantly reduces the risk of a late freeze damaging young transplants.
First Fall Frost Date for Manchester, NH
The average first frost date in fall for Manchester is October 1st. This date marks the approximate end of the growing season for tender plants. Gardeners should plan to harvest frost-sensitive vegetables or provide heavy protection (such as row covers) before this date to avoid crop loss.
Growing Season Length in Manchester, NH
Based on historical frost data, the estimated growing season length in Manchester is approximately 141 days. This duration determines which vegetable varieties have enough time to reach maturity before the winter cold sets in. Short-season varieties are recommended for crops that require a longer warm period.
Please note: These dates are climatological averages. Actual weather conditions vary by year. Always check the local 10-day forecast before planting.
Manchester, NH Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Manchester, NH Monthly Planting Recommendations
March
In March, recommended activities include starting Celery seeds indoors (from March 4th to March 18th), starting Aubergine seeds indoors (from March 18th to April 1st), and starting Pansy seeds indoors (from March 4th to March 18th).
April
In April, recommended activities include starting Cantaloupe seeds indoors (from April 15th to April 29th), direct sowing Alyssum (from April 29th to May 13th), and direct sowing Alfalfa (from April 15th to April 29th).
May
In May, recommended activities include direct sowing Anise (from May 20th to May 27th), direct sowing Jute (from May 27th to June 10th), and direct sowing Lemon Balm (from May 13th to May 27th).