Horseradish is a very cold hardy perennial, the best roots have endured multiple frosts. Tap roots can go down 10 feet if left alone, and in loamy soil. Beautiful green foliage that grows under 2 feet tall.
WHEN TO SOW
SUN OR PART SHADE
SEED SPACING
ROW SPACING
PLANTING DEPTH
SPACE AFTER THINNING
DAYS TO GERMINATE
DAYS TO MATURITY
Late Fall or Early Spring
Full Sun
18 inches apart
18 inches
3-4 inches deep
N/A
N/A
90 days
Soil and Fertilizing
Soil must be moist, fertile, and loamy. Clay soil may be hard for the roots to grow down. Till soil 8-10 inches down for optimum growth. Fertilize in early spring.
Planting
Dig a trench 3-4 inches deep, place roots 18 inches apart and at a 45 degree angle, and cover over with topsoil after planting, Horseradish can tend to take over your garden, so you may want to keep contained.
Watering
Water regularly to keep moist.
Harvesting / Storage
Harvest in either spring or late fall for the best flavor, use a shovel or pitchfork to carefully dig up. Leaving some in the ground to propagate for the next year.
For storage you will want to trim foliage down to about 1 inch and wash and dry roots. Like carrots they can be stored in damp sand in a dark location. Avoid freezing temperatures.
