Early Mizuna in a wood barrel on a white background.
Mizuna Seeds, Early
Early Mizuna head and salad.
Early Mizuna head in wooden box.
Early Mizuna head fresh from garden.
Mizuna Seeds, Early
Mizuna Seeds, Early
Early Mizuna growing in garden.
Early Mizuna in a wood barrel on a white background.
Mizuna Seeds, Early
Early Mizuna head and salad.
Early Mizuna head in wooden box.
Early Mizuna head fresh from garden.
Mizuna Seeds, Early
Mizuna Seeds, Early
Early Mizuna growing in garden.

Mizuna Seeds,
Early

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Description

(Brassica rapa subsp. nipposinica). A traditional variety from the mountainous Kyoto region of Japan. This variety boasts superb cold tolerance, especially during the germination stage, making Early mizuna well adapted to an early spring sowing. This variety will remain tender, even after several harvests and will not readily go to seed. Harvest as micro, baby, or mature greens, and cut-and-come-again up to five times for a super high-quality green. Its long stems are tender, juicy, and dark, and its greens are highly nutritious.

Growing Tips: Early mizuna is a fast-growing, cool-weather green, particularly well-suited for early spring or late summer planting due to its ability to thrive in cooler temperatures. Mizuna is relatively easy to grow and can be cultivated in garden beds or containers. It prefers well-drained, nutrient-rich soil and can tolerate partial shade, though it performs best in full sun. Regular watering is crucial, especially to prevent bolting in warmer weather.

Plant Details

Botanical Name
Brassica rapa subsp. nipposinica
Life Cycle
Annual
Sun Requirement
6–12 hr.
Days to Germinate
5–8
Days to Maturity
40
Planting Depth
¼ in.
Plant Spacing
6–12 in.
Ideal Temperature
55–70°F
Frost Hardy
Yes

When to Grow

Early mizuna is best sown in late winter or early spring for a spring harvest or in late summer for a fall harvest. It grows well in temperatures between 55-70 F, making it ideal for cooler climates. If starting indoors, sow seeds about 4 weeks before the last expected frost. In regions with mild winters, mizuna can also be grown throughout the winter months​. If you’re not sure how to find your area's first and last frost dates, consult our blog post 'Our Experts Answer Questions, Share Resources.'

How to Sow and Plant

To sow Early mizuna, plant seeds 1/4 inch deep directly into the garden or in containers. Space seeds about 1 inch apart in rows that are 12-18 inches apart. If starting indoors, sow seeds in trays and transplant seedlings when they are sturdy enough and after the danger of frost has passed. Thin seedlings to 6-12 inches apart once they reach about 2 inches in height to allow sufficient space for growth​.

How to Grow

Early mizuna requires consistent moisture and performs best in well-drained, fertile soil. Water the plants regularly, especially during dry periods, to keep the soil consistently moist. Apply a balanced fertilizer every few weeks to promote healthy growth. In hot weather, use mulch to retain soil moisture and prevent the plants from bolting. Keep the area around the plants free of weeds, which can compete for nutrients.

How to Save Seeds

  • To save seeds from Early mizuna, allow some plants to bolt and produce flowers.
  • Once the flowers have matured and the seed pods are dry, harvest the pods and store the seeds in a cool, dry place.
  • Mizuna seeds remain viable for up to four years when properly stored.

FAQ

When can I harvest Early mizuna?

Mizuna Early can be harvested as soon as 40 days after sowing, depending on growing conditions. Baby leaves can be harvested early for salads, or you can allow the plant to mature for a fuller flavor.

Can Early mizuna be grown indoors?

Yes, it can be grown indoors on a warm windowsill or in a greenhouse. This is especially beneficial in colder climates to get a head start on the growing season.

What pests are common with Early mizuna?

Common pests include slugs, snails, and flea beetles. Protect young plants with horticultural fleece or row covers and maintain consistent soil moisture to deter these pests.

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