A reposting from April 22, 2008...
Last year we planted 5 sections of horseradish root which grew to be about 4 feet tall as you can see to the right!
Most of the harvested root was made into a wonderful sauce to use on corned beef, shrimp and fish. The small pieces left over from the processing were put in a pot in dirt for the winter in the greenhouse. They gave off a heady aroma all winter!
Now the roots have put up leaves and are being planted in several garden beds as part of the companion planting scheme. One in the potato patch, one near the pear and the peach trees and one in the brassica bed. There are several more to be placed. All are being planted in bottomless pots to control the spread - I hope!
Another use for horseradish - its secret life - is explained in an article from Mother Earth News
The rough-and-ready horseradish plant has long been snubbed by prudent farmers and gardeners. The perennial horseradish (Armoracia lapathifolia) grows wildly throughout temperate climates, leading many people to consider it just another pesky weed. In fact, the plant is so tough that great efforts have been made to limit its growth. Only sauce and Bloody Mary lovers hold horseradish relish in admiration for its spicy properties. Yet the plant lives a double life that few may realize. for complete article click here