New USDA Plant Hardiness Zone Map - so it is vital that we use this information as a guide for creating more robust and durable gardens.New USDA Plant Hardiness Zone Map - so it is vital that we use this information as a guide for creating more robust and durable gardens.New USDA Plant Hardiness Zone Map - so it is vital that we use this information as a guide for creating more robust and durable gardens.New USDA Plant Hardiness Zone Map - so it is vital that we use this information as a guide for creating more robust and durable gardens.New USDA Plant Hardiness Zone Map - so it is vital that