Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Grand forks, ND, based on the USDA Hardiness Zone 4a.
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Grand forks, ND Frost Dates & Growing Season
Last Spring Frost Date for Grand forks, ND
The average last frost date in spring for Grand forks is May 20th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until June 3rd 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 Grand forks, ND
The average first frost date in fall for Grand forks is September 25th. 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 Grand forks, ND
Based on historical frost data, the estimated growing season length in Grand forks is approximately 128 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.
Grand forks, ND Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Grand forks, ND Monthly Planting Recommendations
March
In March, recommended activities include starting Tomatillo seeds indoors (from March 25th to April 8th), starting Impatiens seeds indoors (from March 11th to March 25th), and starting Tomato seeds indoors (from March 25th to April 8th).
April
In April, recommended activities include direct sowing Arugula (from April 22nd to May 6th), direct sowing Flax (from April 22nd to May 6th), and direct sowing Alfalfa (from April 22nd to May 6th).
May
In May, recommended activities include direct sowing Cantaloupe (from May 27th to June 10th), direct sowing Sunflower (from May 27th to June 10th), and direct sowing Moss Rose (from May 27th to June 10th).
June
In June, recommended activities include direct sowing Jute (from June 3rd to June 17th), direct sowing Corn (from June 3rd to June 10th), and direct sowing Lima Bean (from June 3rd to June 17th).