Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Williamstown, PA, based on the USDA Hardiness Zone 6b.
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Williamstown, PA Frost Dates & Growing Season
Last Spring Frost Date for Williamstown, PA
The average last frost date in spring for Williamstown is May 2nd. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until May 16th 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 Williamstown, PA
The average first frost date in fall for Williamstown is October 12th. 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 Williamstown, PA
Based on historical frost data, the estimated growing season length in Williamstown is approximately 163 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.
Williamstown, PA Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Williamstown, PA Monthly Planting Recommendations
February
In February, recommended activities include starting French Lavender seeds indoors (from February 21st to March 7th), starting Begonia seeds indoors (from February 21st to March 7th), and starting Pansy seeds indoors (from February 21st to March 7th).
March
In March, recommended activities include starting Broccoli seeds indoors (from March 7th to March 21st), starting Kale seeds indoors (from March 21st to April 4th), and starting Tomatillo seeds indoors (from March 7th to March 21st).
April
In April, recommended activities include direct sowing Swiss Chard (from April 18th to May 2nd), direct sowing Sorrel (from April 4th to April 18th), and direct sowing Flax (from April 4th to April 18th).
May
In May, recommended activities include direct sowing Cosmos (from May 9th to May 16th), direct sowing Corn (from May 16th to May 23rd), and direct sowing Watermelon (from May 16th to May 30th).