It’s often said that the key to successful, sustainable plants is putting the right plant in the right place. But first, you need to know your place. That begins by learning your hardiness zone while you plan your landscape. This USDA system divides the US into 13 plant hardiness zones—including Alaska, Hawaii, and Puerto Rico—based on the average annual extreme minimum temperature of a region. It’s a rough guide to helping gardeners and landscape professionals choose plants that will grow…




