Horseradish (Armoracia rusticana)
Horseradish is a perennial vegetable in the mustard family. The root is harvested and used in cooking. Horseradish can be used fresh or prepared and canned for storage.
Horseradish benefits from well-drained, fertile soils.
Fertilize with compost and/or composted manure annually.
Dig a 6-inch furrow and plant root cuttings 4 inches deep along the side with compost. Shoots appear in about a week.
The first year of planting, the plant should be allowed to grow. In the second year, a portion of the roots can be harvested. Add composted manure to the plants once a year.
Bohemian and Maliner Kren
Harvest fresh horseradish all year long by cutting pieces of root and replacing soil or compost.
Horseradish contains potassium, calcium, magnesium and phosphorous. It also has antibacterial properties to aid in food preservation.
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Source: UT Extension, PB1578 - Tennessee Master Gardener Handbook