How to Grow Mustard Mizuna
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Mustard Mizuna
Brassica juncea var. japonica
vegetableMustard mizuna is a Japanese leafy green with delicate, feathery leaves and a peppery, mustardy flavor. It's a fast-growing brassica that adds texture and spice to salads and stir-fries. This cool-season crop thrives in spring and fall gardens, producing abundant tender greens in just 3-4 weeks.
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Example Mustard Mizuna timeline · Pittsburgh, PA (Zone 6b)
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Plant Mustard 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 Mustard Mizuna
Around May 12≈ 25 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Mustard Mizuna dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Zones 4-9; grows best in cool seasons (spring and fall)
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Germination
5-7 daysTiny seedlings emerge with first true leaves visible within 5-7 days of sowing; cotyledons are heart-shaped
Keep soil moist; maintain temperatures between 50-70°F; thin seedlings to proper spacing if direct sown
Seedling
7-10 daysYoung plants develop 2-4 true leaves; feathery leaf structure begins to form; plant height is 2-3 inches
Provide consistent moisture; ensure adequate light to prevent leggy growth; thin crowded seedlings to reduce competition
Vegetative Growth
10-20 daysPlant develops numerous feathery, deeply cut leaves in a rosette formation; characteristic mustard-green color deepens
Maintain consistent watering; apply balanced fertilizer mid-growth if needed; monitor for pests closely; keep area weed-free
Mature Leafy Stage
3-5 days before bolting in warm weatherFull rosette of tender, peppery leaves reaches harvest-ready size (6-8 inches diameter); leaves are fully feathery and at peak flavor
Begin selective harvesting of outer leaves; continue watering consistently; avoid bolting by harvesting before hot weather arrives
Bolting (if left unharvested)
Varies; accelerates in heatPlant elongates and produces flowering stems with small yellow flowers; leaves become tougher and more bitter
Harvest before this stage for best eating quality; flowering stems are edible but lower quality; let some plants bolt for seed saving if desired
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Row covers; handpick caterpillars; Bacillus thuringiensis (Bt) spray; neem oil; encourage parasitic wasps
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Row covers; diatomaceous earth; neem oil; insecticidal soap; reflective mulches; avoid over-fertilizing with nitrogen
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Strong water spray to dislodge; insecticidal soap; neem oil; encourage natural predators like ladybugs; reflective mulches
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Yellow sticky traps; insecticidal soap; neem oil; reflective mulches; improve air circulation
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and
Handpick; beer traps; copper tape barriers; diatomaceous earth; encourage ground beetles
Uses
Salad greens and fresh eating
CulinaryTender young leaves add peppery bite and delicate texture to mixed salads, Asian noodle bowls, and fresh preparations. The feathery appearance also provides visual appeal to salad plates. [source]
Cooked greens and stir-fries
CulinaryMature leaves can be lightly sautéed in oil and garlic as a side dish or added to stir-fries, soups, and Asian cuisines. The peppery flavor complements ginger, garlic, and soy-based dishes. [source]
Glucosinolate content
MedicinalAs a brassica, mustard mizuna contains glucosinolates, compounds that convert to isothiocyanates in the body, which have been studied for potential anti-inflammatory and anti-cancer properties. [source]
Microgreens production
CulinaryMizuna seeds germinate quickly and densely, making them ideal for microgreens cultivation indoors. Microgreens are harvested at 1-2 weeks for concentrated flavor and nutrition. [source]
Pollinator support and beneficial insect habitat
WildlifeWhen allowed to flower, mustard mizuna produces small yellow blooms that attract bees and other pollinators. The plant also provides habitat for beneficial insects that control garden pests. [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 plant is 4-6 inches tall, about 3-4 weeks after sowing (or 2-3 weeks after transplanting). Use scissors or pinch leaves off by hand, leaving the central growing point intact for continued harvesting. Harvest in the morning for best flavor and texture. Can do single plant harvests or cut entire plant 1 inch above soil line for regrowth. Flavor peaks in cool weather; harvest before bolting in warm seasons. Young, tender leaves are most desirable; mature leaves become tougher and more peppery.
Fun Facts
- 🌱 Mustard mizuna is primarily a Japanese vegetable that has been cultivated for centuries, particularly in Kyoto, where it's a staple in traditional cuisine.
- 🌱 The name 'mizuna' comes from Japanese words meaning 'water greens' because the plants thrive in moist conditions and are traditionally grown in wet rice paddies.
- 🌱 Mizuna is sometimes called 'feather-leaf mustard' or 'Japanese mustard greens' and can be ready to harvest in as little as 20-25 days, making it one of the fastest-growing leafy greens.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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