I'm really fond of eating horseradish so when I saw some fresh roots for sale I knew I was going to try and grow it. The usual method is to just plant the roots, and I did just that with two other bits but the other piece I submerged in water to see if it would root.
In a couple of weeks the submerged part of the root has sprouted several new little plants. The part of the root that was above water simply dried out. Pretty soon I will twist of the bigger start and keep them in water until they have a proper little root system before I plant them into soil.
Salmon with fresh horseradish creme fraiche here I come!