When should I plant Komatsuna?

Sow seed indoors 6–4 weeks before your last spring frost. Move seedlings into the garden 1–3 weeks before your last spring frost. Sow seed straight into the ground from 4 weeks before to 1 weeks after your last spring frost. For a fall crop, sow 9–6 weeks before your first fall frost.

How far apart do I plant Komatsuna?

Space Komatsuna about 6″ apart. It grows best in part sun.

What grows well with Komatsuna?

Good companions for Komatsuna include Onion, Beet, Carrot, Lettuce. Keep it away from Strawberry.

What zones does Komatsuna grow in?

Komatsuna is suited to USDA zones 3–10 and takes ~40 days to harvest.

How to grow Komatsuna (Brassica rapa var. perviridis)

A forgiving, vigorous leaf mustard with a mild spinach-like bite; grows fast in almost any season.

Quick tip

Japanese mustard spinach - tougher and more heat- and cold-tolerant than spinach; pick leaves young and often.

⛅ Part sun↔ 6″ apartZones 3–10⏳ ~40d

When to plant Komatsuna

Start indoorsSow seed indoors 6–4 weeks before your last spring frost.
Transplant outMove seedlings into the garden 1–3 weeks before your last spring frost.
Direct sowSow seed straight into the ground from 4 weeks before to 1 weeks after your last spring frost.
Fall sowingFor a fall crop, sow 9–6 weeks before your first fall frost.

At a glance

Botanical name

Brassica rapa var. perviridis

Companion planting

Plant near

Keep apart from

Strawberry

🌱 A vigorous leaf-mustard brassica; alliums and roots make good neighbors in cool beds.

Plan Komatsuna for your zone →