As temperatures warm up, the growing season begins, but when temperatures will stay above freezing for the warmer months will differ wildly across the United States. On the Gulf Coast, it is already warm enough to safely begin growing crops and other plants, but you’ll have to wait until May in parts of the West if you’re wary of your plants being frozen. Here is when the last temperatures below 32 degrees typically occur and when you can put your green thumbs to work.