Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Unionville, PA, based on the USDA Hardiness Zone 6b.
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Unionville, PA Frost Dates & Growing Season
Last Spring Frost Date for Unionville, PA
The average last frost date in spring for Unionville is April 22nd. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until May 6th 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 Unionville, PA
The average first frost date in fall for Unionville is October 20th. 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 Unionville, PA
Based on historical frost data, the estimated growing season length in Unionville is approximately 181 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.
Unionville, PA Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Unionville, PA Monthly Planting Recommendations
February
In February, recommended activities include starting French Lavender seeds indoors (from February 11th to February 25th), starting Black Eyed Susan seeds indoors (from February 25th to March 11th), and starting Artichoke seeds indoors (from February 11th to February 25th).
March
In March, recommended activities include starting Luffa seeds indoors (from March 11th to March 25th), direct sowing Chives (from March 25th to April 8th), and starting Moonflower seeds indoors (from March 11th to March 25th).
April
In April, recommended activities include direct sowing Milk Thistle (from April 8th to April 22nd), direct sowing Babys Breath (from April 22nd to May 6th), and direct sowing Carrot (from April 1st to April 15th).
May
In May, recommended activities include direct sowing Butterfly Pea (from May 6th to May 20th), direct sowing Okra (from May 6th to May 20th), and direct sowing Sesame (from May 6th to May 20th).