Horseradish is a perennial that can become a garden weed. It grows best in sun but tolerates some shade. The plant tolerates most soils and is started from root or crown segments. Use root with the upper end cut square and the lower end, if cut, cut at a slant. Set the plants 10 to 12 inches apart in rows 3 feet apart. Cuttings are 6 to 7 inches long and planted in early spring. The plant is often neglected but responds to watering and fertilizing. If neglected the roots may be hotter. If roots are not used, divide horseradish every other year.
Harvest the roots in spring. Save the tops with an inch of root, or some of the smaller roots, for replanting. Any roots left in the soil, after digging, will grow.