[header] How to grow horseradish [title] Obtain horseradish crowns or roots to plant. [step] Purchase a cutting of horseradish from a greenhouse or grocery store. Most of the time, these places will sell crowns (the uppermost part of the plant) or roots that are pre-cut and ready to plant. 
Most gardeners start horseradish from crowns, as the plant grows from the roots and only its weed-like flowers produce seeds. [substeps] Like carrots or potatoes, horseradish roots are ready to go straight into the ground.