Unbeatable, scintillating flavor. Once plants are established, they will produce huge yields of fresh horseradish that will spice up a wide range of dishes. And it’s a perennial, so you can plan on bigger and better crops every year. Harvest as early as spring once the ground thaws and the crown turns green or as late as fall, before the ground freezes. To continue to grow as a perennial, harvest and replant immediately. Harvested roots keep well for months. Cold-hardy. Perennial, Zone 3-8, shipped in bag with moist organic material.