Broomfield, Colorado Hardiness Zones

According to the 2023 USDA Hardiness Zone Map Broomfield, Colorado is in Zones 5b (-15°F to -10°F) and 6a (-10°F to -5°F). There is no change from the 2012 USDA Hardiness Zone Map which has Broomfield in also in Zones 5b (-15°F to -10°F) and 6a (-10°F to -5°F).

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2024 plantmaps.com