When to Plant Collard Green in Bird Island, Minnesota (55310)

Location

Bird Island, Minnesota

ZIP Code

55310

USDA Zone

Last Frost

Tuesday, May 5, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Tuesday, March 24, 2026

Transplant Outdoors

Tuesday, May 5, 2026

Based on last frost Tuesday, May 5, 2026 · Zone 4b

Pro tip: Start Collard Green seeds indoors 6 weeks before your last frost date, then transplant outdoors around Tuesday, May 5, 2026.

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🌿 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 Bird Island?

Get your seeds now so they're ready by Tuesday, March 24, 2026.

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🤝 Good Companions

BeetCeleryOnionDill

⚠️ Avoid Planting Near

TomatoStrawberryPepper

🤝

Full Companion Planting Guide for Collard Green

See which plants help Collard Green thrive, which to keep away, and raised bed layout tips →

🛠️ Supplies You'll Need

🌱 Seed Starting Trays 🪴 Seed Starting Mix 💡 Grow Lights 🌡️ Heat Mat 🪵 Raised Garden Bed 🌍 Vegetable Garden Soil 🛠️ Hand Trowel Set 🚿 Watering Can

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🌾 Seed Saving Guide

🔴 Difficult

✅ Open-pollinated — seeds grow true to parent

When to Harvest Seed

Harvest seed pods when dry and tan, before they shatter.

Processing

Thresh dried seed stalks, winnow to separate seeds from chaff.

Seed Viability

Up to 5 years when stored cool, dark, and dry.

Pro Tip

B. oleracea — crosses with all other oleracea crops including kale, broccoli, and cabbage.

🪴

Raised Bed Planting Guides

A 4×8 bed fits 14 plants of Collard Green. See plant counts, spacing grids, and companion pairings for every bed size →

Frequently Asked Questions

When should I plant Collard Green in Bird Island, Minnesota? +

In Bird Island (Zone 4b), start Collard Green seeds indoors around Tuesday, March 24, 2026 and transplant outdoors around Tuesday, May 5, 2026.

What is the last frost date for Bird Island, Minnesota? +

The average last spring frost date for Bird Island, Minnesota (ZIP 55310) is around Tuesday, May 5, 2026. This is based on NOAA climate normals for USDA Zone 4b.

How long does Collard Green take to grow? +

Collard Green typically matures in about 60 days from transplanting. In Bird Island, that means you can expect harvest around Tuesday, May 5, 2026 plus 60 days.

Should I start Collard Green indoors or direct sow in Minnesota? +

Collard Green should be started indoors 6 weeks before your last frost date. In Bird Island, that means starting around Tuesday, March 24, 2026.

📚 More Collard Green Planting Guides

🗺️

Collard Green in Minnesota

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 4b Collard Green Guide

All cities in your zone · Avg dates

→

Other Plants for Bird Island

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Growing Collard Green in Zone 4b

Collard Green (Brassica oleracea var. viridis) is a popular garden vegetable. In Bird Island, Minnesota, which is in USDA Hardiness Zone 4b, you should start seeds indoors around Tuesday, March 24, 2026.

Your average last frost date is Tuesday, May 5, 2026. Plan to transplant your Collard Green seedlings outdoors around Tuesday, May 5, 2026, about 0 weeks after your last frost date.