Cosmology and herbal medicine are among the oldest sciences of humanity. Their combination makes them valuable for our current challenges. For example, those who want to attune themselves to the energy of new beginnings in spring can do so more easily with the help of nettle. During this season, Mars manifests on Earth in the form of this plant. As a fundamental principle, the human head is associated with Mars, and thus nettle helps with spring headaches that occur with changes in weather. Through such examples, we illustrate the core themes, energies, and plants for each zodiac sign and each planet throughout the twelve months of the year.