Horseradish

A PERENNIAL of the mustard family growing to 70cm. Prefers a moist and well-drained soil and can grow in very alkaline soils. Full sun or semi-shade.
The young leaves are distinctly different to older leaves, being asymettric spiky before becoming flat and broad.
The plant is cultivated mostly for its large, white, tapered root which is a vegetable and spice. It has medicinal use.