Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Harriman, TN, based on the USDA Hardiness Zone 7a.
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Harriman, TN Frost Dates & Growing Season
Last Spring Frost Date for Harriman, TN
The average last frost date in spring for Harriman is April 18th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until May 2nd 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 Harriman, TN
The average first frost date in fall for Harriman is October 30th. 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 Harriman, TN
Based on historical frost data, the estimated growing season length in Harriman is approximately 195 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.
Harriman, TN Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Harriman, TN Monthly Planting Recommendations
February
In February, recommended activities include starting Pepper seeds indoors (from February 21st to March 7th), starting Tomato seeds indoors (from February 21st to March 7th), and starting Rosemary seeds indoors (from February 7th to February 21st).
March
In March, recommended activities include direct sowing Watercress (from March 21st to April 4th), direct sowing Alfalfa (from March 21st to April 4th), and starting Marigold seeds indoors (from March 7th to March 21st).
April
In April, recommended activities include direct sowing German Chamomile (from April 4th to April 18th), direct sowing Sunflower (from April 25th to May 9th), and direct sowing Moss Rose (from April 25th to May 9th).
May
In May, recommended activities include direct sowing Mung Bean (from May 2nd to May 16th), direct sowing Lima Bean (from May 2nd to May 16th), and direct sowing Butterfly Pea (from May 2nd to May 16th).