Boone, Colorado Hardiness Zones

According to the 2023 USDA Hardiness Zone Map Boone, Colorado is in Zones 5b (-15°F to -10°F). There is no change from the 2012 USDA Hardiness Zone Map which has Boone in also in Zones 5b (-15°F to -10°F).

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2024 plantmaps.com