The USDA Plant Hardiness Zone Map divides the United States into 11 different planting zones. Adjacent growing zones are separated from each other by 10 ℉ in their average winter temperatures. Gardeners rely on this map to determine when it is warm enough to plant certain seeds. If it is too cold outside and they attempt to start planting, the plants will end up being damaged or killed.
Below, you will find the hardiness zone map for each state. Most states are divided into several different growing zones. Before planting, it is always helpful to check the zone map for your region.