30-40 days (spring sowing), 50-80 days (fall sowing) from sowing
Komatsuna is a highly nutritive and productive leafy green commonly found in Japanese cuisine. The name Tatsu means “dragon” – for its strong, upright plant habit and ability to withstand high heat.
Growing Information
- Suitable temperature for germination: 70-85℉
- Suitable temperature for growing: 60-80℉
- Soil pH: 6.5-7.5
- Days to maturity: 30-40 days (spring sowing), 50-80 days (fall sowing) from sowing
ermination
- Sow 1-2 seeds 1/2″ deep and 1/2″ apart in rows, with 6″ between rows.
- Cover with 1/4″ soil, press gently and water well.
Thinning
- When plants have 1-2 true leaves, thin to 1″ spacing: remove any plants closer than 1″ to allow remaining plants to grow.
- At 3-4 true leaves, thin to 3″ spacing.
Maintenance
- Cultivate regularly and remove weeds.
- Watering: allow soil to dry between waterings to prevent rot or disease issues.
Harvest
- Harvest at 10-12″ height (30-40 days after sowing if sow in spring, 50-80 days if sow in autumn).
Cooking Information
Komatsuna can be used similarly to spinach, though it has a softer texture and cooks more quickly. Common for stir-fry, blanched, in soups or salads.
Can also be quick-pickled.












