Mercersburg's Hardiness Zone

Our records indicate the United States Department of Agriculture has given Mercersburg a 2023 growing zone designation of 7a. Sometimes also called the planting zone or hardiness zone, this zone number gives you an idea of what plants can and cannot grow in Mercersburg's climate. If you are looking for plants suitable for growing in the Mercersburg area, head on over to our page on plants that grow well in Mercersburg, PA.

8pc Heavy Stainless Steel Garden Tool Set

Hydroponic Indoor Garden Grow Kit

Reusable Grow Bags for Tomatoes, Vegetable and Fruits

Seed Starting Trays
Understanding your growing zone is very important because it is a measure of the lowest temperature that a plant can survive, helping you to decide what plants would grow best in your particular climate. Since Mercersburg is in growing zone 7a this means that plants there can survive temperatures as low as 10 to 15 degrees Fahrenheit. Plants chosen for Mercersburg's climate should be chosen with this in mind or plants should be moved inside to keep their core temperature in the right range if necessary.
2023 USDA Growing Zone: 7a
Zip Codes: 17236
Longitude: -77.9028
Latitude: 39.8318
Lowest Avg Temperatures (F): 0 to 5