When to Plant Collard Green in Cable, Wisconsin (54821)

Location

Cable, Wisconsin

ZIP Code

54821

USDA Zone

Last Frost

Friday, May 15, 2026

📅 Planting Calendar

Start Seeds Indoors Friday, April 3, 2026

Transplant Outdoors Friday, May 15, 2026

Pro Tip: Start Collard Green seeds indoors 6 weeks before your last frost date, then transplant outdoors around Friday, May 15, 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 Cable?

Get your seeds now so they're ready by Friday, April 3, 2026.

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🤝 Good Companions

BeetCeleryOnionDill

⚠️ Avoid Planting Near

TomatoStrawberryPepper

Other Plants for Cable

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Growing Collard Green in Zone 4a

Collard Green (Brassica oleracea var. viridis) is a popular garden vegetable. In Cable, Wisconsin, which is in USDA Hardiness Zone 4a, you should start seeds indoors around Friday, April 3, 2026.

Your average last frost date is Friday, May 15, 2026. Plan to transplant your Collard Green seedlings outdoors around Friday, May 15, 2026, about 0 weeks after your last frost date.