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Can You Grow Lettuce in Colorado?

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

Grows well here

Lettuce grows excellently here — one of the best cool-season crops for your climate.

Plant zones

2b–9b

Colorado last frost

early April

Colorado first frost

late October

Days to harvest

30–60 days

When to plant Lettuce in Colorado

Direct sow

Apr 7

Harvest

May 7 – Jun 6

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

About Lettuce

Lettuce is one of the fastest and easiest crops to grow — perfect for beginners and container gardens.

Sow directly in early spring — lettuce tolerates light frost. Harvest outer leaves for cut-and-come-again. Bolts in summer heat; replant in late summer for a fall crop.

Full lettuce 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.

See what grows well in Colorado →

Frequently asked questions

Can you grow Lettuce in Colorado?

Lettuce grows excellently here — one of the best cool-season crops for your climate.

What zone is Colorado?

Colorado spans USDA Zone 5b (3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b).

When do you plant Lettuce in Colorado?

Plant Lettuce Apr 7, harvest May 7 – Jun 6.