Soil
Any moist, fertile soil.
Position
A sunny spot with room to spread. The roots often spread several feet in the course of a season.
Frost tolerant
Horseradish is a hardy perennial that will survive winter even in very cold climates.
Feeding
Not usually required.
Companions
Potatoes. Usually horseradish should be planted by itself.
Spacing
Single Plants: 1′ 1″ (35cm) each way (minimum)
Rows: 1′ 1″ (35cm) with 1′ 1″ (35cm) row gap (minimum)
Sow and Plant
Set out roots any time that the ground is not frozen, preferably from early spring to early summer.
Notes
Persistent and long lived, horseradish can become invasive if you accidentally allow pieces of root to be spread around the garden.
Harvesting
Dig roots anytime you need them in the kitchen. Keep scrubbed roots in the refrigerator.
Troubleshooting
Horseradish seldom has problems with insects or diseases.
