How to Grow Mibuna

Updated June 2026

A cool-season leafy green for the home garden.

What it looks like as it grows

Mibuna is a rewarding cool-season crop for backyard growers.

🌱 Plant profile: Mibuna, with sowing times for your region, companion plants and common pests.

When to plant

Mibuna is a cool-season crop. In the South and Southwest, plant in fall through winter when the heat eases. See your region on the mibuna page for exact timing.

Varieties

• Mibuna, Mild Japanese mustard green (Kitazawa/True Leaf Market)

How to grow it

• Sun & soil: part sun to light shade, rich well-drained soil with even moisture.
• Spacing: about 6 in between plants.
• Sowing: barely cover the seed.
• Water: roughly 1.1 gal per plant every 2 days in hot weather.

Pests & problems

Watch for Flea beetle. In humid regions, space plants for airflow and water at the roots in the morning.

Harvest

Mibuna is usually ready to harvest in roughly 5 weeks. Pick regularly to keep plants productive.

When to plant in your region

Pick your region to see exactly when to plant mibuna where you garden.

See also: Mibuna in the plant library →

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