I tried to grow it once and it got destroyed by bugs. I was really surprised that anything would eat it but there seems to be a pest for everything down here. I love good and really hot horseradish and so does my wife. When we make our own cocktail sauce for boiled shrimp and such it is so full of horseradish it is only slightly pink. It kinda slaps you in the back of the head when you eat it but it does a wonderful job of clearing your sinuses.
How deep do you plant it? Does it like full sun or partial shade?
Bill