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Can You Grow Kale in Colorado?

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

Grows well here

Kale grows exceptionally well here — it is one of the most cold-tolerant vegetables available.

Plant zones

2a–9b

Colorado last frost

early April

Colorado first frost

late October

Days to harvest

55–75 days

When to plant Kales in Colorado

Start indoors

Mar 10

Transplant

Apr 7

Harvest

Jun 1 – Jun 21

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

About Kale

Kale is one of the hardiest vegetables available — it survives hard frosts and tastes sweeter after a freeze.

Sow indoors 4-6 weeks before last frost or direct sow in late summer for fall harvest. Harvest outer leaves to keep the plant producing. Cold-hardy varieties survive winter in Zone 7+.

Full kale 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 Kale in Colorado?

Kale grows exceptionally well here — it is one of the most cold-tolerant vegetables available.

What zone is Colorado?

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

When do you plant Kales in Colorado?

Plant Kales around early April (start indoors Mar 10), harvest Jun 1 – Jun 21.