When to Plant Collard Green in Minneapolis, Minnesota (55421)

Location

Minneapolis, Minnesota

ZIP Code

55421

USDA Zone

Last Frost

Sunday, May 10, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Sunday, March 29, 2026

Transplant Outdoors

Sunday, May 10, 2026

Based on last frost Sunday, May 10, 2026 · Zone 5a

Pro tip: Start Collard Green seeds indoors 6 weeks before your last frost date, then transplant outdoors around Sunday, May 10, 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 Minneapolis?

Get your seeds now so they're ready by Sunday, March 29, 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 Minneapolis, Minnesota? +

In Minneapolis (Zone 5a), start Collard Green seeds indoors around Sunday, March 29, 2026 and transplant outdoors around Sunday, May 10, 2026.

What is the last frost date for Minneapolis, Minnesota? +

The average last spring frost date for Minneapolis, Minnesota (ZIP 55421) is around Sunday, May 10, 2026. This is based on NOAA climate normals for USDA Zone 5a.

How long does Collard Green take to grow? +

Collard Green typically matures in about 60 days from transplanting. In Minneapolis, that means you can expect harvest around Sunday, May 10, 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 Minneapolis, that means starting around Sunday, March 29, 2026.

📚 More Collard Green Planting Guides

🗺️

Collard Green in Minnesota

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 5a Collard Green Guide

All cities in your zone · Avg dates

→

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Growing Collard Green in Zone 5a

Collard Green (Brassica oleracea var. viridis) is a popular garden vegetable. In Minneapolis, Minnesota, which is in USDA Hardiness Zone 5a, you should start seeds indoors around Sunday, March 29, 2026.

Your average last frost date is Sunday, May 10, 2026. Plan to transplant your Collard Green seedlings outdoors around Sunday, May 10, 2026, about 0 weeks after your last frost date.