Mizuna (Brassica rapa var. nipposinica) is a traditional Japanese mustard green known for its tender, serrated leaves with a mildly peppery flavor. Fast-growing and highly productive, Mizuna is perfect for salads, stir fry, soups, and Asian-inspired dishes. It thrives in cool weather, is bolt-resistant, and can be grown in both garden beds and containers for a continuous harvest of fresh, nutritious greens.
Seed Information
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Type: Vegetable Seeds
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Common Name: Mizuna Mustard, Japanese Mustard Greens
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Genus: Brassica
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Species: Brassica rapa var. nipposinica
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Life Cycle: Annual
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Features: Fast growing, cut-and-come-again leafy green, mild peppery flavor, heat and cold tolerant
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Season of Interest: Spring and fall (cool-season crop)
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Indoor/Outdoor: Both (containers, raised beds, outdoor gardens)
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Sunlight: Full sun to partial shade
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Cultivating Difficulty: Easy
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Watering: Moderate, prefers consistent moisture
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Climate: Temperate, Mediterranean, Humid Subtropical
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Growth Habit: Upright rosette, 12–18 in tall
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Soil Type: Fertile, well-draining soil enriched with compost
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Soil pH: 6.0–7.5
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Planting Time: Early spring or late summer for fall crop
Grow Instructions
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When to Plant: Direct sow outdoors 2–4 weeks before last frost, or late summer for fall harvest
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Soil: Fertile, well-draining soil rich in organic matter
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Sunlight: Full sun (6+ hrs) to partial shade
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Watering: Keep soil evenly moist, especially in warm weather
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Spacing: 6–12 inches apart
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Germination: 5–10 days at 55–70°F (13–21°C)
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Harvest: Baby leaves in 20–25 days; full maturity in 40–50 days
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Tips: Succession sow every 2–3 weeks for continuous harvest; harvest outer leaves to allow regrowth