Perennial roots are available commercially as 2 year olds. Soil should be well drained and rich in organic matter. The crown of the root needs to be planted 12-18” below the soil level. Dig a trench 18” deep and spread the long roots sideways to nestle the crown low enough. Cover the crown with 3” of soil and water in. After a week or so a sprout will appear. Allow it to grow 8-9” and cover ½ way. One the sprout has cleared the soil level by several inches fill in the rest of the trench. They prefer some moisture but not a lot. Once they are established they require little care. You can begin harvest after 2 years.
Martha Washington – 3 year old plants