Plant hardiness zones, delineated by the United States Department of Agriculture (USDA), define geographic areas based on average minimum winter temperatures. These zones serve as a crucial guide for gardeners and agriculturalists in selecting plants that are most likely to thrive in a specific location. New Hampshire’s variable topography results in a range of zones within the state.
Understanding the applicable hardiness zone is essential for successful gardening and landscaping. It allows for informed decisions about plant selection, minimizing the risk of winter damage and maximizing the chances of healthy growth. Historical data on temperature patterns contribute to the accuracy of these zonal designations, providing a valuable resource based on years of observation.