Herb Pharm Burdock Blend Extract to assure optimal potency, they harvest roots from first-year plants, and seeds from fully matured second-year plants. these are each extracted separately according to their individual biochemistry and are then blended together to produce their Burdock Blend. Burdock Blend Extract contains extracts of: Burdock seed Burdock root Herb Pharm Burdock Blend Extract is: Certified Organically Grown Custom Wildcrafted Shade-Dried A Healthy Farm Yields Healthy Herbs At Herb Pharm they grow most of their herbs on the "Pharm Farm" - their certified organic farm located in a rural valley of the Siskiyou Mountains in southern Oregon. As organic farmers, we never use synthetic fertilizers, herbicides and pesticides, nor do they use genetically modified seeds. Instead, they employ fundamental, time-honored sustainable agriculture techniques including crop rotation, cover cropping, natural weed control such as hand weeding and flame weeding, and composting to condition our soil. Each year, their farm is inspected and certified as organic by Oregon Tilth. Oregon Tilth is a nonprofit organization supporting and promoting biologically sound and socially equitable agriculture through education, research, advocacy, and certification. Oregon Tilth Certified Organic (OTCO) is an internationally recognized symbol of organic integrity. The purpose of organic certification is to ensure that the agreed upon conventions of organic agricultural systems are being practiced not only by growers, but also by all the people who handle and process organic food, feed and fiber on its journey to the consumer. In order to accomplish this, OTCO provides a system that combines strict production standards, on-site inspections, and legally binding contracts to protect the producers and buyers of organic products.