When to Plant Collard Green in Bay City, Michigan (48708)

Location

Bay City, Michigan

ZIP Code

48708

USDA Zone

Last Frost

Monday, April 20, 2026

📅 Planting Calendar

Start Seeds Indoors Monday, March 9, 2026

Transplant Outdoors Monday, April 20, 2026

Pro Tip: Start Collard Green seeds indoors 6 weeks before your last frost date, then transplant outdoors around Monday, April 20, 2026.

🌿 Plant Details

Scientific Name Brassica oleracea var. viridis

Days to Maturity 60 days

Mature Height 24-36"

Spread 18"

Type Leaf

Fruit Size N/A

☀️ Growing Requirements

☀️

Sun

Full Sun (6+ hours)

💧

Water

Regular (1-1.5 inches/week)

↔️

Spacing

18" apart

🌱

Planting Depth

0.5" deep

Seeds typically germinate in 4-7 days

Ready to Plant Collard Green in Bay City?

Get your seeds now so they're ready by Monday, March 9, 2026.

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🤝 Good Companions

BeetCeleryOnionDill

⚠️ Avoid Planting Near

TomatoStrawberryPepper

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Growing Collard Green in Zone 6a

Collard Green (Brassica oleracea var. viridis) is a popular garden vegetable. In Bay City, Michigan, which is in USDA Hardiness Zone 6a, you should start seeds indoors around Monday, March 9, 2026.

Your average last frost date is Monday, April 20, 2026. Plan to transplant your Collard Green seedlings outdoors around Monday, April 20, 2026, about 0 weeks after your last frost date.