When to Plant Collard Green in Bowie, Maryland (20721)
Location
Bowie, Maryland
ZIP Code
20721
USDA Zone
7b
Last Frost
Sunday, April 5, 2026
📅 Planting Calendar
Start Seeds Indoors Sunday, February 8, 2026
Transplant Outdoors Sunday, April 19, 2026
Pro Tip: Start Collard Green seeds indoors 8 weeks before your last frost date for best results.
🌿 Plant Details
Scientific Name Brassica oleracea
Days to Maturity 168 days
☀️ Growing Requirements
☀️
Sun
Full Sun
💧
Water
Regular
Seeds typically germinate in 8-21 days
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Growing Collard Green in Zone 7b
Collard Green (Brassica oleracea) is a popular garden vegetable. In Bowie, Maryland, which is in USDA Hardiness Zone 7b, you should start seeds indoors around Sunday, February 8, 2026.
Your average last frost date is Sunday, April 5, 2026. Plan to transplant your Collard Green seedlings outdoors around Sunday, April 19, 2026, about 2 weeks after your last frost date.