Green Mizuna Mustard (Brassica juncea) Japanese Greens Herb Vegetable Seeds

Green Mizuna Mustard (Brassica juncea) is a fast-growing Japanese leafy green with tender, deeply serrated leaves and a mild, peppery flavor. This non-GMO variety is highly productive and suitable for spring and fall planting, offering home gardeners abundant cut-and-come-again harvests. Green Mizuna thrives in garden beds, raised beds, and containers, making it a versatile and dependable leafy green for salads, stir-fries, and cool-season gardening.

Features

• Japanese leafy green with mild peppery flavor
• Non-GMO, fast-growing mustard variety
• Produces tender, serrated green leaves
• Excellent for cool-season planting
• Performs well in containers, raised beds, and open garden rows
• Ideal for cut-and-come-again harvesting
• Cold-tolerant and beginner-friendly
• Quick maturity for continuous greens

Specifications

• Common Name: Green Mizuna, Japanese Mustard Greens
• Scientific Name: Brassica juncea
• Plant Type: Annual
• USDA Zones: 3–10
• Season: Spring and fall
• Height: 12–18 inches
• Leaf Type: Long, serrated, tender green leaves
• Flavor: Mild, peppery, slightly sweet
• Bloom Color: Yellow (if allowed to bolt)
• Heirloom: Yes
• GMO Status: Non-GMO
• Organic: Not certified organic
• Light Requirements: Full sun to partial shade
• Soil Preference: Moist, well-drained soil
• Water Needs: Moderate and consistent
• Growth Rate: Fast
• Days to Harvest: 30–50 days
• Cold Tolerance: Good
• Heat Tolerance: Low to moderate; may bolt in heat
• Plant Spacing: 6–12 inches
• Seed Longevity: 2–3 years in cool, dry storage

Planting Guide 

• Sowing Method: Direct sow outdoors or start indoors.
• Seed Preparation: No pre-treatment needed.
• When to Plant:
• Early spring as soon as soil can be worked
• Late summer to fall for autumn greens
• Sowing Depth: 1/4 inch.
• Germination Time: 5–10 days.
• Light Requirements: Full sun to partial shade.
• Soil Conditions: Moist, well-drained soil enriched with organic matter.
• Watering: Keep evenly moist for tender leaves.
• Maintenance:
• Harvest young leaves regularly
• Thin seedlings for stronger plants
• Provide shade in warm climates to prevent bolting