Placement and use
Give horseradish its own contained section of the vegetable garden, with a path or open bed edge alongside it for digging. A long, narrow bed margin works well: it keeps the foliage from overshadowing shorter crops and lets you work around the root zone without stepping into neighboring plantings. Potatoes may be included nearby where their space needs are separately met, but leave enough room to maintain each crop independently. Avoid placing it where future bed expansion would require disturbing its roots.