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Horseradish - Armoracia rusticana

Type: Perennial

Horseradish (Armoracia rusticana) is a perennial plant of the Brassicaceae family, which also includes mustard, wasabi, broccoli, and cabbages. Native to southeastern Europe and western Asia, horseradish can grow up to 1.5m tall, and is mainly cultivated for its large white, tapered root.

The intact horseradish root has hardly any aroma, but when cut or grated it produces a pungent, hot-mustard condiment, or can be used to flavour pickles and sauces.

Horseradish will grow in any soil and position, but prefers rich moist soil and some sun. Producing long tapering green leaves and racemes of small white flowers in late spring or early summer, Horseradish is not grown for its merit as a garden plant, but it will hold its own in the herb or vegetable garden.

After the first frost in the autumn kills the leaves, the root is dug and divided. The main root is harvested and one or more large offshoots of the main root are replanted to produce next year's crop. Horseradish left undisturbed in the garden spreads via underground shoots and can become invasive.