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Can You Grow Peanut in Colorado?

US · USDA Zone 5b · zones 3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b

Won't grow here

Peanuts need 120-150 warm frost-free days to mature — too short or too cool a season means no nuts.

Plant zones

6a–11b

Colorado last frost

early April

Colorado first frost

late October

Days to harvest

120–150 days

When to plant Peanuts in Colorado

Start indoors

Mar 10

Transplant

Apr 7

Harvest

Aug 5 – Sep 4

Dates are approximate, based on Colorado's average frost dates. Your exact yard may vary by microclimate.

About Peanut

Peanuts are a fascinating crop — not a tree nut but a legume that flowers above ground and buries its pods below. They need a long, hot growing season and loose, sandy soil.

Plant raw, unroasted peanuts after soil warms to 65°F+. Hill soil around plants as they grow so pegs can bury. Harvest when foliage yellows; dry the pods before shelling.

Full peanut growing guide →

Gardening in Colorado

Colorado has a semi-arid mountain climate with intense sunshine and low humidity. Front Range cities like Denver are Zone 5-6; higher elevations are Zones 3-4.