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When to Plant Radicchio in Colony, Oklahoma (73021)

Location

Colony, Oklahoma

ZIP Code

73021

USDA Zone

7b

Last Frost

Sunday, April 5, 2026

📅 Planting Calendar

Start Seeds Indoors Sunday, March 8, 2026
Transplant Outdoors Sunday, March 22, 2026

Pro Tip: Start Radicchio seeds indoors 4 weeks before your last frost date for best results.

🌿 Plant Details

Scientific Name Cichorium intybus
Days to Maturity 80 days

☀️ Growing Requirements

☀️

Sun

Full Sun

💧

Water

Regular

Seeds typically germinate in 7-14 days

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Other Plants for Colony

Growing Radicchio in Zone 7b

Radicchio (Cichorium intybus) is a popular garden vegetable. In Colony, Oklahoma, which is in USDA Hardiness Zone 7b, you should start seeds indoors around Sunday, March 8, 2026.

Your average last frost date is Sunday, April 5, 2026. Plan to transplant your Radicchio seedlings outdoors around Sunday, March 22, 2026, about -2 weeks after your last frost date.