Burdock Blend 4 oz by Herb PharmWe prepare our Burdock extract from the shade dried root and the mature seed of Arctium lappa plants which are Certified Organically Grown 1 without the use of chemical fertilizers, pesticides or herbicides, or are Custom Wildcrafted 2 in their natural wild habitat. To assure optimal potency, we harvest roots from first year plants, and seeds from fully matured second year plants. These are each extracted separately according to their individual