Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Richfield, MN, based on the USDA Hardiness Zone 4b.
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Richfield, MN Frost Dates & Growing Season
Last Spring Frost Date for Richfield, MN
The average last frost date in spring for Richfield is May 5th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until May 19th 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 Richfield, MN
The average first frost date in fall for Richfield is October 5th. 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 Richfield, MN
Based on historical frost data, the estimated growing season length in Richfield is approximately 153 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.
Richfield, MN Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Richfield, MN Monthly Planting Recommendations
February
In February, recommended activities include starting Onion seeds indoors (from February 24th to March 10th), starting Impatiens seeds indoors (from February 24th to March 10th), and starting Geranium seeds indoors (from February 24th to March 10th).
March
In March, recommended activities include starting Brussel Sprout seeds indoors (from March 24th to April 7th), starting Ground Cherry seeds indoors (from March 10th to March 24th), and starting Statice seeds indoors (from March 10th to March 24th).
April
In April, recommended activities include direct sowing Potato (from April 7th to April 21st), direct sowing Lentil (from April 21st to May 5th), and direct sowing Lettuce (from April 7th to April 21st).
May
In May, recommended activities include direct sowing Black Bean (from May 19th to June 2nd), direct sowing Butterfly Pea (from May 19th to June 2nd), and direct sowing Butternut Squash (from May 12th to May 26th).