Regions: Western United States

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  • Mahonia aquifolium

    Botanical Overview Mahonia aquifolium, commonly known as Oregon grape, holly grape, or Mahonia, is a member of the Berberidaceae family native to North America, especially the Pacific Northwest, Western United States, and Canada. The plant’s root, root bark, stem bark, and leaves are utilized medicinally. Energetics The energetics of Mahonia aquifolium are characterized as cooling…


  • Rhamnus purshiana (cortex)

    Botanical Overview Rhamnus purshiana (cortex), commonly known as Cascara sagrada or Sacred bark, belongs to the family Rhamnaceae. The medicinal part used is the bark harvested primarily from this species native to North America, especially the Pacific Northwest region. Energetics This herb is traditionally considered warming and drying in nature, with a bitter taste. It…