"While cool-season flowers (pansy, petunia, lobelia, and dianthus) and winter crops (lettuce ... Zone 5-6 is anywhere between early- to late-April," confirms Enfield. "This means that few ...

"There are many areas of the U.S. where homeowners are already gardening in February and March." Understanding when you're in the clear starts by understanding your zones. In November, the USDA ...