Also known as Japanese-Horseradish · Wasabi · Wild Wasabi
Eutrema japonicum is a perennial herb with pungent roots, often used as a condiment. It thrives in moist, shaded environments.
At-a-glance light, water, soil, and growing conditions from plant data
Partial Shade to Full Sun
50% intensity
Prefers locations with morning sun and afternoon shade, especially in hot climates.
Consistent Moisture
50% intensity
Keep soil evenly moist, never waterlogged. Reduce in cooler weather.
Loam, Sandy loam, Clay loam
50% intensity
Cool to Moderate
50% intensity
Thrives in temperatures between 10-24°C. Protect from extreme heat and frost.
Light Feeding
25% intensity
Apply a balanced fertilizer once in spring. Avoid over-fertilizing.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
| Edible | Yes |
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Keep the soil consistently moist, but avoid waterlogging. Water more frequently during hot, dry periods and reduce watering in cooler months.
Ensure good drainage to prevent root rot, especially in container-grown plants. Check the top inch of soil; if it feels dry, it's time to water.
Pruning is generally not required for Japanese horseradish, as it is grown for its roots. However, you can remove any dead or damaged foliage at any time of year to maintain plant health and appearance.
Focus on root harvesting in autumn for the best flavor.
Japanese horseradish is primarily propagated by division of its rhizomes.
In early spring or autumn, carefully dig up the plant and divide the thick, fleshy roots into sections, ensuring each piece has at least one 'eye' or bud. Replant these divisions immediately.
If grown in containers, repot every 2-3 years in early spring or autumn. Use a larger pot with fresh, well-draining potting mix.
This helps to refresh the soil and provide more space for root development, which is crucial for this plant.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Japanese Horseradish (Eutrema japonicum)
Where Japanese Horseradish (Eutrema japonicum) is found
Density
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Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Brassicales |
| Family | Brassicaceae |
| Genus | Eutrema |
| Species | Eutrema japonicum |
Similar in genus Eutrema
Answers based on plant encyclopedia data
