When to Plant Napa Cabbage in Avon, Minnesota (56310)

Location

Avon, Minnesota

ZIP Code

56310

USDA Zone

Last Frost

Tuesday, May 5, 2026

📅 Your 2026 Planting Dates

Start Seeds Indoors

Tuesday, March 24, 2026

Transplant Outdoors

Tuesday, May 19, 2026

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

Pro tip: Start Napa Cabbage seeds indoors 6 weeks before your last frost date, then transplant outdoors around Tuesday, May 19, 2026.

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🌿 Plant Details

Scientific Name Brassica rapa subsp. pekinensis

Days to Maturity 70 days

Mature Height 12-18"

Spread 12"

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Regular (1-2 inches/week)

↔️

Spacing

18" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 4-7 days

Ready to Plant Napa Cabbage in Avon?

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

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🤝 Good Companions

BeetOnionCeleryCucumber

⚠️ Avoid Planting Near

StrawberryTomatoPepper

🤝

Full Companion Planting Guide for Napa Cabbage

See which plants help Napa Cabbage 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

🟡 Moderate

✅ Open-pollinated — seeds grow true to parent

When to Harvest Seed

Allow heads to bolt in spring heat. Harvest seed pods when tan and dry.

Processing

Thresh dried seed stalks, winnow to separate seeds.

Seed Viability

Up to 4 years when stored cool, dark, and dry.

Pro Tip

Brassica rapa — crosses with bok choy, turnip, and other rapa crops. Isolate by 300 feet.

🪴

Raised Bed Planting Guides

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

Frequently Asked Questions

When should I plant Napa Cabbage in Avon, Minnesota? +

In Avon (Zone 4b), start Napa Cabbage seeds indoors around Tuesday, March 24, 2026 and transplant outdoors around Tuesday, May 19, 2026.

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

The average last spring frost date for Avon, Minnesota (ZIP 56310) is around Tuesday, May 5, 2026. This is based on NOAA climate normals for USDA Zone 4b.

How long does Napa Cabbage take to grow? +

Napa Cabbage typically matures in about 70 days from transplanting. In Avon, that means you can expect harvest around Tuesday, May 19, 2026 plus 70 days.

Should I start Napa Cabbage indoors or direct sow in Minnesota? +

Napa Cabbage should be started indoors 6 weeks before your last frost date. In Avon, that means starting around Tuesday, March 24, 2026.

📚 More Napa Cabbage Planting Guides

🗺️

Napa Cabbage in Minnesota

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 4b Napa Cabbage Guide

All cities in your zone · Avg dates

→

Other Plants for Avon

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Growing Napa Cabbage in Zone 4b

Napa Cabbage (Brassica rapa subsp. pekinensis) is a popular garden vegetable. In Avon, 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 Napa Cabbage seedlings outdoors around Tuesday, May 19, 2026, about 2 weeks after your last frost date.