Japanese Mizuna Mustard Greens Seeds Leafy Upright Crisp Feathery Leaves

Orders usually need 2 business days to prepare before shipping. Estimated U.S. transit is 4–5 business days after dispatch, excluding preparation time. Transit to other supported destinations is estimated at 7–11 business days after dispatch, excluding preparation time. See the shipping policy.

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Haiyiplants Return and Exchange Guarantee | 30-Day Worry-Free After-Sales Service, Quality You Can Trust

At Haiyiplants, we want every customer to feel confident when choosing their favorite seeds. Therefore, we are proud to introduce our 30-day worry-free return and exchange policy—providing transparent and thoughtful service to safeguard your gardening journey. Whether the seed variety does not meet your expectations or you encounter any quality issues, our team is dedicated to providing you with efficient solutions to ensure that your shopping experience is always worry-free.

Order Cancellation
You can cancel your order within 48 hours after placing it. Refunds will be returned to your original payment method, with processing times of 1-2 business days.

Return Policy: Convenient Process, Safe Refunds
We guarantee that all seeds are non-GMO varieties and provide reliable germination rate assurance. If you find that the packaging is damaged, the seeds are moldy, the variety does not match the description, or the promised germination rate is not achieved under the correct cultivation conditions, you can request a return within 30 days of receiving your order. After verification, we will issue a full refund.

Exchange Policy: Accurate Matching, Quick Replacement
If you receive seeds with the aforementioned quality issues or need to change the variety specifications, you can request an exchange within 30 days. We will prioritize matching you with the desired variety and quickly dispatch the new products to minimize your waiting time.

After-Sales Service Exceptions
Haiyiplants is not responsible for returns, exchanges, or seed failure due to the following circumstances: improper storage (such as high temperatures, humidity, or exposure to sunlight), cultivation environments that do not meet plant growth requirements, or sowing errors that are not related to the quality of the product itself, leading to seeds failing to germinate or poor growth; contamination or loss caused by human error after the seeds have been unsealed.

Note: For seeds that experience a decrease in germination rate due to slight improper storage, our team of professional horticulturists can provide free cultivation guidance. For more details, please contact our customer service.

Contact Us
If you have any questions about returns or exchanges or need assistance, please contact us through the following methods:

• Email: export@haiyiplants.com
• Service Hours: Replies within 24 hours, 7 days a week

At Haiyiplants, we uphold our dual quality commitment to non-GMO and germination rates, sincerely treating every gardening enthusiast. Our 30-day worry-free return and exchange policy is designed to allow you to shop with peace of mind and enjoy the fun of planting to harvesting, easily embracing the joy of lush greenery. Thank you for your trust and support!

Read the return policy

We promise to provide you with high-quality, fresh and viable flower seeds.

Bullet Points:

• Exquisite Feathery "Mizuna" Shape: The deeply serrated, sword-like leaves create a beautiful, airy texture in the garden and on the plate, making every salad look like a work of art.
  
• Mild, Sweet Peppery Zing: Perfect for those who want a hint of flavor without the harsh bite. It offers a gentle wasabi-like spice with a sweet, refreshing aftertaste.
• Crisp & Tender Long Stems: The slender, pale-green stalks are incredibly crisp and juicy, adding a wonderful crunch to fresh salads.
• Ultra-Fast "Cut-and-Come-Again" Grower: One of the fastest greens you can grow! Snip the outer leaves and stems, and the inner core will keep regrowing for multiple harvests.
  
• Cold-Hardy Fall & Winter Champion: Thrives in the cool temperatures of spring and autumn. It tolerates light frosts beautifully, extending your gardening season.
• Versatile Kitchen Staple: Excellent for fresh gourmet spring mix salads, pickling, light sautéing with garlic, and adding to Asian noodle soups.
  

Product Details:

• Genus: Brassica
  
• Species: Brassica juncea (Mizuna / Japanese Mustard)
  
• Hardiness Zone: USDA Zones 4 – 11 (Cold-hardy; tolerates light frosts down to 25°F).
  
• Days to Maturity: 25 - 30 days (Baby leaf) / 40 - 45 days (Mature).
  
• Days to Germination: 4 to 7 days (Optimal soil temp: 55°F - 75°F).
  
• Seeding Depth: ¼ to ½ inch (0.6 - 1.2 cm).
• Row Spacing: 12 - 18 inches (30 - 45 cm).
• Plant Height:  10 – 14 inches (25 - 35 cm) upright cluster.
  
• Growth Habit: Upright, spreading rosette. Features deeply serrated, feathery, bright green leaves with long, slender, crisp pale-green stems.
  
• Soil Preference: Loose, fertile, moisture-retentive loam rich in organic matter. pH 6.0 – 7.5.
  
• Temperature Preference: Cool weather. Best performance at 50°F - 65°F (10°C - 18°C). Tolerates light frosts well.
  
• Light Preference: Full Sun (minimum 6 hours) to Partial Shade.

How to Plant & Grow:

• Site Preparation: Choose a location with full sun to partial afternoon shade. Mizuna prefers loose, fertile, well-draining soil rich in organic matter. Work 3 inches of aged compost into the top 6 inches of the soil.
  
• Sowing: Direct sow seeds outdoors in early spring as soon as the soil can be worked, or in late summer for a spectacular fall/winter harvest. Plant seeds ¼ to ½ inch (0.6-1.2 cm) deep and cover lightly with fine soil. Keep the soil consistently moist until germination (5-7 days).

Spacing:

• For Mature Full Plants: Thin seedlings to 10 to 12 inches (25-30 cm) apart in rows spaced 12 to 18 inches (30-45 cm) apart.
  
• For Continuous Baby Leaf Harvest: Sow seeds densely at 2 to 4 inches (5-10 cm) apart and snip leaves when young.
  
• Square Foot Gardening (SFG): Plant 4 plants per 1-square-foot area for mature growth.
• Watering: Keep the soil evenly moist. Provide about 1 inch of water per week. Consistent moisture is the secret to tender, non-bitter greens.
  
• Harvesting: Using sharp scissors, snip the outer stems and leaves about 2 inches above the soil line. Leave the central core untouched, and it will rapidly regrow fresh leaves for repeated harvests.
• Gardener's Tip: Harvest young for the best salads! For the mildest, most tender stems, begin harvesting when the plants are 6-8 inches tall. If you let them grow too large, the stems may become slightly tougher, making them better suited for light cooking.

Planting Calendar:

• Early Spring Crop:
  Direct Sow: March to Mid-April (as soon as soil reaches 45°F). 
  Harvest: May to June.
  
• Fall/Winter Crop (Highly Recommended):      Direct Sow: August to September.
  Harvest: October through Winter (Tolerates light frost).
  
• Mild Winter Zones (USDA 9-11): 
  Can be sown from October to January.