Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Dover, DE, based on the USDA Hardiness Zone 7b.
On this page:
Dover, DE Frost Dates & Growing Season
Last Spring Frost Date for Dover, DE
The average last frost date in spring for Dover 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 Dover, DE
The average first frost date in fall for Dover is November 8th. 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 Dover, DE
Based on historical frost data, the estimated growing season length in Dover is approximately 204 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.
Dover, DE Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Dover, DE Monthly Planting Recommendations
February
In February, recommended activities include starting Leek seeds indoors (from February 7th to February 21st), starting Geranium seeds indoors (from February 7th to February 21st), and starting Pansy seeds indoors (from February 7th to February 21st).
March
In March, recommended activities include starting Marigold seeds indoors (from March 7th to March 21st), direct sowing Sorrel (from March 21st to April 4th), and direct sowing Flax (from March 21st to April 4th).
April
In April, recommended activities include direct sowing German Chamomile (from April 4th to April 18th), direct sowing Swiss Chard (from April 4th to April 18th), and direct sowing Babys Breath (from April 18th to May 2nd).
May
In May, recommended activities include direct sowing Watermelon (from May 2nd to May 16th), direct sowing Melon (from May 2nd to May 16th), and direct sowing Butterfly Pea (from May 2nd to May 16th).