Minnesota Horticulture: Horseradish - Growing Your Own
It doesn't seem to look very intimidating. It has a pretty green, leafy top. The leaves are somewhat scratchy feeling. The roots are what is used to make ground horseradish.
The most perfect horseradish is made with roots that are bigger than a pencil and smaller than a thumb. You should only make horseradish in a month with the letter 'R' in it. This means, do NOT dig up your roots in May, June, July, August.... just any of the others, since they have 'R' in it...
In Minnesota, we cannot dig our roots in January or February or March since they are usually in frozen ground or covered with four foot of snow at that time.
It Grows by Itself
Horseradish is very prolific. If you take the leaves of the plant and throw them on the ground, make sure that it is a spot that you want horseradish to grow, because eventually, those leaves will take root and make another plant.
The same applies to pieces of horseradish root. Each piece of root will make another plant. I found that out one year when I had my garden tilled and the tiller got close to my patch and there were little horseradish sprouts growing in my garden later that year.
Horseradish Relish is Simple
First I cut. Then I peel. Then I slice. Then, I puree. Then, I scoop it into the jar. Then I add my salt and vinegar.
It's actually ready to eat on crackers as soon as you add the salt and vinegar.
How to Increase Your Patch
When you cut your horseradish, save everything you cut off:
The tops, peelings, and anything you discard because it looks unappetizing. All of this will root if in contact with dirt. It will all make a new plant.
Just toss it on the ground where you want horseradish to grow. You don't even have to water it. Just make sure you want horseradish in that spot. Because, eventually, you will.
2 c. ground horseradish
1 c. vinegar
¼ tsp. salt
I know that this recipe does not seem logical, but the vinegar does fill in the spaces between the pieces of horseradish.
Options: you can put slivered jalapeno in your horseradish - it adds some sort of flavor and color.. not that it needs to be any hotter. I have seen horseradish that contains mustard oil, but you have to be careful since just the vapor will knock your head backwards.
This is what it looks like after a summer of growing.
If I were to cut up the tops and put them somewhere else, each piece would grow another plant.
I am not so sure that you couldn't take a jar of horseradish from the store and get it to grow. I do not know if vinegar stunts the plant or not.