| Zone 5b -15°F to -10°F | Zone 6a -10°F to -5°F |
Based on the USDA Hardiness Zone Map Designations, this interactive version covers the Province of Prince Edward Island which ranges from USDA Zone 5b to USDA Zone 6a. What are Hardiness Zones, Gardening Zones, Growing Zones and Plant Zones? Hardiness Zones, Gardening Zones, Growing Zones and Plant Zones refer to defined geographic regions that can support specific plants, flowers and trees. T he zones define a minimum range of temperatures that a plant or tree can survive safely in that zone.