Usda Growing Zones 2024 List. A gardening zone, also known as a plant hardiness zone, is a geographically defined area that helps gardeners determine which plants are most likely to flourish in the. Zones 12 and 13 have been introduced for regions with average annual extreme minimum temperatures above.
This page allows you to find and download state, regional, and national plant hardiness zone maps at various resolutions. These zones are delineated based on the average annual lowest minimum temperature.