The soil should be deeply dug and rich in humus. Horse radish does not do well in light soils. If you can get hold of some well-rotted manure, mix it in. Otherwise, scratch a little balanced fertilizer into the soil above the roots.
Cuttings can be planted in spring or fall. During the growing season, keep plants watered and lightly cultivated. Dig roots in the fall and grate them immediately if you want horse radish at its best. Roots can also be left in the ground over winter and dug as needed.
Although horse radish grows on from year to year if not disturbed, the plants deteriorate to some extent and produce tough, inferior roots. It is advisable, therefore, to plant new cuttings if your plant becomes tough.
You can buy rooted cuttings or make your own by cutting an old root into pencil-size strips about 6" long. Plant the strips 1’ apart in rows 1’ wide. Be sure that what had been the top of the root is still at the top. Cover with 3" of soil.
