Do you know your garden zone? The USDA Plant Hardiness Zone Map is used by the garden industry to communicate the cold hardiness of landscape plants. Knowing your planting zone can be very useful when you are planning your garden and flower bed areas. The 2012 USDA Plant Hardiness Zone Map is the standard by which gardeners and growers can determine which plants are most likely to thrive at a location. The map is based on the average annual minimum winter …