Wasabi plant, Wasabia japonica, is sometimes known as Japanese Horseradish. The roots are traditional spice in Japan used in the manner of horseradish. Used with raw fish dishes such as sashimi or sushi. The roots are a greenish colour on the inside. Wasabi is native to Japan and eastern Asia. A semi-aquatic, Wasabi may be grown as a terrestrial. preferring moist well-drained soils in a shaded position. Frost resistant but drought tender. A perennial plant growing to 0.3m x 0.3m.
Wasabi seed is supplied as fresh and undried. Keep moist and refrigerated until sowed. Sow in the autumn, when large fluctuation in temperature between day and night.
Wasabi plants are also available.