When to Plant Brussels Sprout in Nunn, Colorado (80648)

Location

Nunn, Colorado

ZIP Code

80648

USDA Zone

Last Frost

Sunday, May 10, 2026

📅 Planting Calendar

Start Seeds Indoors Sunday, February 15, 2026

Transplant Outdoors Sunday, May 10, 2026

Pro Tip: Start Brussels Sprout seeds indoors 12 weeks before your last frost date, then transplant outdoors around Sunday, May 10, 2026.

🌿 Plant Details

Scientific Name Brassica oleracea var. gemmifera

Days to Maturity 84 days

☀️ Growing Requirements

☀️

Sun

Full Sun

💧

Water

Regular

Seeds typically germinate in 1-7 days

Ready to Plant Brussels Sprout in Nunn?

Get your seeds now so they're ready by Sunday, February 15, 2026.

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Growing Brussels Sprout in Zone 5a

Brussels Sprout (Brassica oleracea var. gemmifera) is a popular garden vegetable. In Nunn, Colorado, which is in USDA Hardiness Zone 5a, you should start seeds indoors around Sunday, February 15, 2026.

Your average last frost date is Sunday, May 10, 2026. Plan to transplant your Brussels Sprout seedlings outdoors around Sunday, May 10, 2026, about 0 weeks after your last frost date.