Plant Hardiness Zones By Zip Code 2024. What are plant hardiness zones? It's easy, you can use your zip code, geolocation (with gps), or.

If you’re not sure about the zone you’re planting in, all you have to do is enter the zip code. 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.