When to Plant Napa Cabbage in Colorado City, Arizona (86021)

Location

Colorado City, Arizona

ZIP Code

86021

USDA Zone

Last Frost

Sunday, April 5, 2026

📅 Planting Calendar

Start Seeds Indoors Sunday, February 22, 2026

Transplant Outdoors Sunday, April 19, 2026

Pro Tip: Start Napa Cabbage seeds indoors 6 weeks before your last frost date, then transplant outdoors around Sunday, April 19, 2026.

🌿 Plant Details

Scientific Name Brassica rapa subsp. pekinensis

Days to Maturity 70 days

Mature Height 12-18"

Spread 12"

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Regular (1-2 inches/week)

↔️

Spacing

18" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 4-7 days

Ready to Plant Napa Cabbage in Colorado City?

Get your seeds now so they're ready by Sunday, February 22, 2026.

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🤝 Good Companions

BeetOnionCeleryCucumber

⚠️ Avoid Planting Near

StrawberryTomatoPepper

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Growing Napa Cabbage in Zone 7b

Napa Cabbage (Brassica rapa subsp. pekinensis) is a popular garden vegetable. In Colorado City, Arizona, which is in USDA Hardiness Zone 7b, you should start seeds indoors around Sunday, February 22, 2026.

Your average last frost date is Sunday, April 5, 2026. Plan to transplant your Napa Cabbage seedlings outdoors around Sunday, April 19, 2026, about 2 weeks after your last frost date.