How to grow horseradish

When to plant horseradish

Horseradish is a hardy perennial grown from root cuttings, called sets. University of Minnesota Extension says to plant the sets in early spring as soon as the soil is workable, setting them vertically or at a 45 degree angle and covering with two to three inches of soil.

Horseradish is timed by season rather than your frost dates, so the planting calendar does not generate ZIP-specific dates for it. Check the cited sources below to fine-tune for your area.