Home › Spinach › Grow in Colorado

Can You Grow Spinach in Colorado?

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

Grows well here

Spinach grows well here — it thrives in your cool-season growing window.

Plant zones

2a–9a

Colorado last frost

early April

Colorado first frost

late October

Days to harvest

40–50 days

When to plant Spinach in Colorado

Direct sow

Apr 7

Harvest

May 17 – May 27

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

About Spinach

Spinach is a cold-hardy fast-growing leafy green that thrives in cool weather and handles light frost.

Sow directly in early spring or fall. Harvest outer leaves to extend the season. Bolts quickly in summer heat — shade cloth helps. Perfect for containers and indoor growing.

Full spinach 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 Spinach in Colorado?

Spinach grows well here — it thrives in your cool-season growing window.

What zone is Colorado?

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

When do you plant Spinach in Colorado?

Plant Spinach Apr 7, harvest May 17 – May 27.