This happens quite often when vegetable plants from hell turns into a pernicious weed, which is very difficult to uproot. And above all, because the soil is completely removed from all the roots of horseradish impossible, and after a short period of time, they give life to the plants, which appears much larger than before grubbing.
To completely get rid of the boring weed, some gardeners proceed as follows - cut off the top part of the plant will bare root and sprinkled with the usual kitchen salt. After a few days of salt and the hot summer sun completely kill the rhizome fuck over its entire length.
This, of course, way out, but not a full and proper solution to the problem, because salt itself is an alien element in the garden. Therefore, the best option, in our opinion, is to use instead of salt fertilizers, such as ammonium nitrate or potassium salt.
They are used in the same way as the salt, causing the point of growth horseradish 5-10 g fertilizer. Horseradish plants die and the soil is not only not salted, but gets an extra dose of nutrients.