A hardiness zone is a geographic area with a similar average minimum temperature. The map is based on the average annual extreme minimum temperature, so people in those areas know which plants can ...

The U.S. Department of Agriculture (USDA) has a Plant Hardiness Zone Map that divides the U.S. into 13 different zones, which helps gardeners choose plants that can survive in their respective ...

Here's which planting region Wisconsin falls in and how to look up the plant hardiness in your zip code. Trouble seeing the map? Click here to view the planting zones for the North Central U.S ...