Oregon Grape 4 oz by Herb PharmWe prepare our Oregon Grape Extract from the young lateral roots of Mahonia (Berberis) aquifolium shrubs which are Custom Wildcrafted in their wild mountain habitat in the Pacific Northwest. To assure optimal extraction of Oregon Grape's bioactive compounds, the roots are hand dug only in late autumn or early spring, and are then carefully shade dried and thoroughly extracted. These statements have not been evaluated by the Food and Drug