Last Frost in the Garden?
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Collapse ▲A 70 degree day in March or April does not mean it’s time to plant tomatoes! We are not out of clear according to the State Climate Office of North Carolina.
Average first and last frost dates, using data sometimes over 100 years old, are calculated statewide.
Dates will vary depending on elevation and which side of the mountain your garden is located. South facing sites will warm sooner than North facing slopes. Low lying areas can be “frost pockets” and are prone to late frosts. Again, these are average dates and can vary from site to site depending on a number of factors.
For an Asheville elevation of 2117 feet the last frost date is April 20. No standard deviation is given but you can count on at least 10 days either way that a hard frost can happen. That is why we recommend, TO BE ON THE SAFE SIDE, waiting until around Mothers Day to plant tender garden plants. These typically incude summer flowers and vegetables like petunias, tomatoes, and peppers.
Use this interactive map to explore average first and last frost dates in areas across North Carolina.
Many gardeners, eager to get their garden started, will utilize a number of techniques to protect their plants. These include row covers, cold frames and even a milk jug with the bottom cut out and placed over the plant, also known as a cloche.
Making sure plants are well-watered and mulched can also help protect plants from freeze damage. Check out this information on Season Extenders.
Dont forget that some plants like most peppers, are warm season plants and grow better when it’s hot. Planting early does not always help you get ahead of the game!
When in doubt contact your local N.C Cooperative Extension Center to learn more!
Interactive map for first and last frost dates