Eutrema japonicum (Wasabi)

Eutrema japonicum, commonly known as Wasabi, is a distinctive perennial herb prized for its pungent rhizomes, traditionally grated and served with Japanese cuisine. Its broad, heart-shaped green leaves grow in attractive clusters above slender stems, creating a lush, leafy appearance. Fresh wasabi has a sharp, clean heat and distinctive flavour, making it a sought-after edible plant for home gardeners and culinary enthusiasts.

Best suited to cool, shaded gardens and sheltered growing areas, Eutrema japonicum prefers consistently moist conditions, high humidity and rich, well-drained soil. It naturally grows along cool mountain streams in Japan and is sensitive to heat, direct afternoon sun and drying out. Choose a cool, shaded position and keep the soil evenly moist without allowing the roots to sit in stagnant water. Growing wasabi successfully in warm climates can be challenging, so careful temperature and moisture management are essential.