Armoracia rusticana

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Armoracia rusticana, or horseradish, is a perennial of the brassicaceae family. It grows to 70cmx80cm at a quick rate and blooms in the spring and summer months. Horseradish prefers moist soil and can be found in woodland areas and by streams. 

The young root is grated to make the spicy ‘horseradish sauce.’ While the sauce is best eaten uncooked (since heat will destroy the oils responsible for its pungency), the root can be eaten raw or cooked. The young leaves have a similarly strong flavor and can be added to salads (in small quantities). Horseradish is a powerful stimulant and can be used to treat bacterial infections and spur digestive movement.