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Colorado planting calendars & frost dates

18 cities · USDA zones + NOAA frost dates + monthly weather normals

Pick your city for its average last & first frost dates, USDA hardiness zone, a month-by-month typical-weather table, and a crop-by-crop planting schedule — all built from public USDA and NOAA data.

Cities in Colorado

Arvada · zone 6a Aurora · zone 6a Boulder · zone 6a Broomfield · zone 6a Castle Rock · zone 5b Colorado Springs · zone 6a Commerce City · zone 6a Denver · zone 6a Fort Collins · zone 5b Grand Junction · zone 7a Greeley · zone 5a Littleton · zone 6a Longmont · zone 5b Loveland · zone 5b Parker · zone 5b Pueblo · zone 6a Thornton · zone 6a Westminster · zone 6a

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