Answer: Too late to plant now (unless you can find some nursery that might have a few potted leftover plants) but roots will be available next winter-spring. Horseradish is not fussy in the garden, thriving on average soils with average maintenance. Roots are harvested every fall after 2-3 years of allowing them to multiply. Preparation is a matter of peeling and grinding the roots in any resourceful and non-stinky manner you like. Many people eat the freshly grated root straight up, others like it blended with vinegar, mayo, or any other personal preference.
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