How to Grow Mizuna
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Mizuna
Brassica rapa var. nipposinica
vegetableMizuna is a Japanese mustard green characterized by delicate, feathery, finely divided leaves that form a loose rosette. It has a mild, slightly peppery flavor and tender texture, making it popular in salads and Asian cuisine. The plant grows quickly and is cold-tolerant, thriving in cool seasons.
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Example Mizuna timeline · Pittsburgh, PA (Zone 6b)
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Plant Mizuna
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Mizuna
Around May 17≈ 30 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Mizuna dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-9, especially in cool-season growing (spring and fall)
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Get my Mizuna timeline →Growth Stages
Germination & Seedling
10-14 daysSeeds sprout in 5-10 days. Seedlings develop their first true leaves with slight frilly margins. Plants are delicate and light green.
Keep soil consistently moist. Thin seedlings to proper spacing once they have 2-3 true leaves. Provide bright light if starting indoors.
Vegetative Growth
15-25 daysFeathery, finely divided leaves expand rapidly. Plants form a loose, open rosette. Leaf color deepens to medium green.
Maintain consistent moisture and cool temperatures (ideal 50-70°F). Begin harvesting outer leaves once plants reach 4-6 inches tall for continuous production.
Leaf Development & Maturity
10-15 daysPlants reach full size with abundant, fully formed feathery leaves. Rosette becomes fuller and more substantial.
Continue harvesting outer leaves regularly to encourage new growth and prevent bolting. Provide afternoon shade in hot climates.
Bolt Stage
7-14 days (varies by temperature)A central flowering stem emerges, leaves become smaller and tougher, and flavor becomes more intensely peppery.
Once bolting begins, harvest remaining leaves or allow to flower. Plants are still edible but less tender. Can save seeds if desired.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Use floating row covers on young plants, apply neem oil or insecticidal soap, encourage beneficial insects, plant trap crops like mustard
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Use row covers to prevent moth laying eggs, apply Bt (Bacillus thuringiensis), handpick caterpillars, encourage parasitic wasps
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Spray with water to dislodge, apply neem oil or insecticidal soap, introduce ladybugs and lacewings, avoid excess nitrogen fertilizer
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and
Handpick, set beer traps, create copper barriers, encourage ground beetles, remove debris and mulch during wet periods
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Use yellow sticky traps, spray with neem oil or insecticidal soap, promote air circulation, introduce whitefly parasitoids
Uses
Fresh salads and Asian dishes
CulinaryMizuna's delicate, feathery leaves and mild peppery flavor make it ideal for fresh salads, Asian stir-fries, soups, and as a garnish. The tender texture is prized in Japanese, Chinese, and modern fusion cuisine. [source]
Peppery seasoning element
CulinaryWhen mature or bolted, mizuna develops a more pronounced mustard-peppery flavor suitable for cooked dishes, pickles, and flavor-forward preparations. [source]
Nutritional and anti-inflammatory benefits
MedicinalMizuna is rich in vitamins A, C, and K, plus glucosinolates and other sulfur compounds that may have anti-inflammatory and potential anticancer properties. [source]
Pollinator and beneficial insect support
WildlifeWhen allowed to flower, mizuna produces delicate yellow flowers that attract pollinators and beneficial insects to the garden, supporting ecosystem health. [source]
Quick-growing microgreens and sprouts
HouseholdMizuna is excellent for indoor microgreen and sprout production, ready to harvest in 2-3 weeks and providing nutrient-dense fresh greens year-round. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Begin harvesting outer leaves when plants are 4-6 inches tall for baby greens (30-40 days). Cut leaves at the base using scissors or pinch off carefully. Harvest in the morning for best flavor and crispness. Continue harvesting outer leaves to encourage new growth; plants will produce for 4-6 weeks. For whole plant harvest, cut at soil level when fully mature. Mizuna is best harvested in cool weather; fall and spring crops taste sweeter than summer harvests. After bolting, flowers are edible with a peppery kick.
Fun Facts
- 🌱 Mizuna has been cultivated in Japan for over 100 years and is a staple in Japanese cuisine, where it's called 'kyona' or 'mizuna' meaning 'water greens.'
- 🌱 The feathery leaves of mizuna are not just decorative—they increase surface area for photosynthesis, allowing the plant to grow very quickly even in cooler climates.
- 🌱 Mizuna is one of the few Asian brassicas that can tolerate mild frosts and can be harvested even after light snow, making it an excellent fall and early winter crop.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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