When to Plant Mizuna in Fresno, California (93708)

Location

Fresno, California

ZIP Code

93708

USDA Zone

Last Frost

Tuesday, February 10, 2026

📅 Your 2026 Planting Dates

Direct Sow Outdoors

Tuesday, January 13, 2026

Based on last frost Tuesday, February 10, 2026 · Zone 9b

Pro tip: Sow Mizuna directly outdoors 4 weeks before your last frost date.

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🌿 Plant Details

Scientific Name Brassica rapa var. nipposinica

Days to Maturity 40 days

Mature Height 8-18"

Spread 8"

☀️ Growing Requirements

☀️

Sun

Partial to Full Sun (4-6 hours)

💧

Water

Regular (1-2 inches/week)

↔️

Spacing

6" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 4-7 days

Ready to Plant Mizuna in Fresno?

Get your seeds now so they're ready by Tuesday, January 13, 2026.

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🤝 Good Companions

CarrotOnionBeetSpinach

⚠️ Avoid Planting Near

StrawberryTomato

🤝

Full Companion Planting Guide for Mizuna

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

🛠️ Supplies You'll Need

🪵 Raised Garden Bed 🌍 Vegetable Garden Soil 🛠️ Hand Trowel Set 🚿 Watering Can

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🌾 Seed Saving Guide

🟢 Easy

✅ Open-pollinated — seeds grow true to parent

When to Harvest Seed

Let plants bolt fully. Harvest seed pods when tan and dry before they shatter.

Processing

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

Seed Viability

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

Pro Tip

Mizuna is a Brassica rapa and will cross with other mustard-family plants — isolate by 300 feet for purity.

🪴

Raised Bed Planting Guides

A 4×8 bed fits 4 per sq ft of Mizuna. See plant counts, spacing grids, and companion pairings for every bed size →

Frequently Asked Questions

When should I plant Mizuna in Fresno, California? +

In Fresno (Zone 9b), direct sow Mizuna outdoors around Tuesday, January 13, 2026.

What is the last frost date for Fresno, California? +

The average last spring frost date for Fresno, California (ZIP 93708) is around Tuesday, February 10, 2026. This is based on NOAA climate normals for USDA Zone 9b.

How long does Mizuna take to grow? +

Mizuna typically matures in about 40 days from direct sowing. In Fresno, that means you can expect harvest around Tuesday, January 13, 2026 plus 40 days.

Should I start Mizuna indoors or direct sow in California? +

Mizuna does best when direct sown outdoors. In Fresno, sow directly around Tuesday, January 13, 2026.

📚 More Mizuna Planting Guides

🗺️

Mizuna in California

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 9b Mizuna Guide

All cities in your zone · Avg dates

→

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Growing Mizuna in Zone 9b

Mizuna (Brassica rapa var. nipposinica) is a popular garden vegetable. In Fresno, California, which is in USDA Hardiness Zone 9b, you should direct sow seeds around Tuesday, January 13, 2026.

Your average last frost date is Tuesday, February 10, 2026. Mizuna grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.