USDA Hardiness Zones

If you want a plant to survive in your home garden, the plant must tolerate the year-round conditions in your area such as the amount and distribution of rainfall and lowest and highest temperatures.

In 1960 The USDA Cold Hardiness Zone Map was published, using the map to find the zone that you live in, you can determine what plants will survive in your area because it can withstand the temperature averages.

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How do I know if a plant is an annual or a perennial?


Coastal North Carolina (Wilmington and Wallace) is 8a, so plants that are Zone 1-8 would be a perennial, Zones 9-13 would be an annual.

Use the USDA Plant Hardiness Zone Chart to determine your zone here.