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The USDA divides the United States into seven planting regions, known as hardiness zones, which were most recently updated in 2023. The maps below show these planting regions.

However, before introducing tomato plants in your garden, you need to pay attention to the United States hardiness zone map.

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 ...