The Hildegard Health Guide to the four most important medicinal plants: galangal, yarrow, costmary, and violet. These four basic medicinal plants of Hildegard of Bingen—galangal, yarrow, violet, and costmary—are true miracle healers and should not be missing from any home or travel pharmacy. Due to their strong effectiveness and ease of use, they are considered the four most outstanding medicinal plants in the healing practice of Hildegard of Bingen. Wighard Strehlow precisely describes how and when these plants and their special healing powers can be utilized. They not only provide protection against infections but also serve as first aid measures in cases of heart attack risk, injuries, and acute illnesses. They have anti-inflammatory properties, improve wound and scar healing, and even provide support for emotional distress. They can be taken in powdered form, as tea, or applied as compresses.