Wasabi Root Seeds Wasabia japonica – Heirloom Japanese Horseradish Seeds
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Grow authentic Japanese flavor with Japanese Wasabi Root Seeds (Wasabia japonica), a prized culinary plant known for its sharp, aromatic roots used as a sushi condiment. This heirloom herb thrives in cool, shaded environments with moist soil conditions. Ideal for specialty herb gardens and shaded outdoor areas, wasabi plants produce flavorful roots and lush green foliage. Perfect for adventurous gardeners and culinary enthusiasts, these seeds allow you to cultivate fresh, high-quality wasabi at home for traditional Japanese dishes.
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Planting Season
Spring Autumn
Light Requirement
Partial Shade
Plant Height
1–2 Feet
Indoor/Outdoor
Both
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Frequently Asked Questions
Everything you need to know before you sow.
How can I keep wasabi roots from becoming stressed by heat?
How can I keep wasabi roots from becoming stressed by heat?
Grow in partial shade, keep the soil evenly moist, maintain good humidity, and protect plants from excessive heat as directed on the product page.
Why does wasabi need more moisture than many garden herbs?
Why does wasabi need more moisture than many garden herbs?
Wasabi is a moisture-loving perennial root herb. The product lists high moisture needs and advises keeping the soil consistently moist without drying out.
Can wasabi be grown in a shaded container?
Can wasabi be grown in a shaded container?
Yes. The product lists indoor and outdoor growing. Use rich loam, partial shade, and a container that holds moisture while still allowing drainage.
How long should I expect to wait before harvesting wasabi roots?
How long should I expect to wait before harvesting wasabi roots?
The product lists an estimated harvest time of 12–18 months, so wasabi requires a longer growing period than many annual culinary herbs.
How should I space wasabi plants in a specialty herb bed?
How should I space wasabi plants in a specialty herb bed?
Use about 20–30 cm between plants as listed. This provides room for the edible root and foliage while maintaining the dense planting habit.
Why is wasabi often confused with Japanese horseradish?
Why is wasabi often confused with Japanese horseradish?
Wasabi is commonly called Japanese horseradish because of its pungent culinary character, but it is a distinct plant species, Wasabia japonica.
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