The Celts were the leading culture in large parts of Europe for almost a thousand years. Although Druidism was destroyed, the common people held on to the ancient knowledge and passed it on orally and practically in the form of farmers' rules, fairy tales, legends, seasonal rituals, and above all herbal knowledge and folk medicine. The author introduces us to a healing tradition that is not about active ingredients but about the magical power and magic of plants. He presents the most important healing and magical plants and the trees of the Celts in their seasonal and cultural context, in healing and in magic, and describes the meaning of the Celtic year cycle and tree calendar. Through the eight Celtic seasonal festivals and their rituals, he guides us through the year cycle and shows how we can once again attune ourselves to the great rhythms of nature today. With numerous practical recipes for ancient healing remedies and treatments.