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Can You Grow Artichoke in Colorado?

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

Won't grow here

Artichokes need a long, mild growing season that your zone cannot provide reliably.

Plant zones

6a–9b

Colorado last frost

early April

Colorado first frost

late October

Days to harvest

85–100 days

When to plant Artichokes in Colorado

Start indoors

Feb 9

Transplant

Apr 7

Harvest

Jul 1 – Jul 16

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

About Artichoke

Artichokes are dramatic architectural plants that produce large thistle-like flower buds for eating. A perennial in mild zones, they need a long warm season. The giant silvery plants become a striking garden focal point.

Start indoors 8-10 weeks before last frost. Vernalization (cold treatment of seedlings) improves first-year flowering — expose seedlings to 10 days below 50°F. Give each plant 4x4 feet of space. Cut main bud before it opens; side buds follow.

Full artichoke 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.