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.

Hardiness Zones 101. The USDA Plant Hardiness Zone Map consists of 13 individual zones that take in all of the contiguous United States, plus Alaska, Hawaii, and Puerto Rico.

Onions: Best to plant seedlings before March 27. Last day to plant is July 23 ; Jalapeno Peppers: Best to plant seedlings between April 24 and May 1.There is not a last day to plant. Tomatoes ...