These plants are ready to ship, and we will ship on same day or day after order is received. Can be planted any time you soil is not frozen. Heirloom Bohemian Horseradish Crowns Noted For Their Extra Large Roots- Easy to Grow - Very Hot! Plant Any Time of Year (Armoracia rusticana, syn. Cochlearia armoracia) A perennial member of the Brassicaceae family. Cultivated for its large white tapered root that is grated and mixed with vinegar for the hottest horseradish sauce. Grows to about 5 ft tall. Selected for it's large size, vigor and productivity of large roots. Easy to grow, this plant will last a lifetime without replanting! Roots will grow up to 3 inches across and can be harvested the year after planting. These are large premium quality crown roots. Plants come with detailed planting, growing and care instructions...and you can call or email if you have additional questions. 1, 2, and 5 crown roots will be sent First Class Mail, and 10 -50 will be sent Priority Mail. We are prohibited from shipping Horseradish to customers located in Hawaii. Scenic Hill Farm is a licensed Oregon Nursery. Check out our store.