Elsa, I have to know more about the horseradish. I have a good sized patch that just exists. I have never done anything to improve it. Should I dig out some roots and start another one? The roots seem to be rather gnarled and crooked. When I made horseradish last year, I just grated it and put in refrig in tightly closed jar. I don't think I added vinegar. Did you use white vinegar? My horseradish didn't have much heat. I had some horseradish in KS-I was used to horseradish sauce (mixed with sour cream) and this was the straight stuff. I had a spot on top of my head the size of a silver dollar that I was sure was open to my brain. Never felt anything like that-even habs. Had to keep feeling to be sure my hair and skin was all there, and wasn't smoking. I used the electric blanket and planted my seeds week ago today. I have one pot of peppers up, tomatillos and Romas. Some of my seeds were not fresh so may not come up but still looking several times a day. At least I am having fun. Joanne