Common St. John’s Wort (Hypericum perforatum)
To me, one of the quintessential summer-blooming wildflowers is the common St. John’s wort. By, or shortly after the summer solstice, you should start to see its sunny yellow blossoms everywhere. Common St. John’s wort (Hypericum perforatum) can be distinguished from other Hypericum species by its five-petaled yellow flowers (with black dots on the margins) that are approximately 1-inch across, and its many branching stems, growing to a height of 1 to 3 feet, as well as its oblong oppositely…