Home › Brussels Sprouts › Grow in Colorado

Can You Grow Brussels Sprouts in Colorado?

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

Grows well here

Brussels sprouts grow here with a long enough frost-free season — frost actually improves them.

Plant zones

3a–9a

Colorado last frost

early April

Colorado first frost

late October

Days to harvest

90–180 days

When to plant Brussels Sproutses in Colorado

Start indoors

Feb 9

Transplant

Apr 7

Harvest

Jul 6 – Oct 4

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

About Brussels Sprouts

Brussels sprouts have a long season but reward patience — sprouts actually improve after a light frost.

Start indoors 8 weeks before last frost. Plant in the sunniest spot. Needs a long season — start early. Frost improves flavour. Stake in exposed positions against autumn winds.

Full brussels sprouts 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.