Hypericum, commonly known as St. John's Wort, is a genus of flowering plants in the family Hypericaceae. It includes over 400 species, many of which are known for their bright yellow flowers. These plants are often found in temperate regions and are used in traditional medicine, particularly for their potential antidepressant properties. The most well-known species, Hypericum perforatum, has been studied for its effects on mood and anxiety. In addition to its medicinal uses, Hypericum is also valued for its ornamental qualities in gardens. The plant typically thrives in sunny locations and can grow in various soil types.