Summer Wildflowers of Mount Holyokeby Karen Searcy
Hypericum perforatum (Common St. John's Wort)
Flower coloryellow
Number of petals5
Petal fusionfree
Lea arrangementopposite
Leaf groupingsimple
Leaf marginsentire
Leaf/leaflet shapeelliptic
Fruit typedry
Fruit colorbrown
Flowering datesJuly - Aug
HabitatDisturbed areas
DescriptionThis is a branched, leafy plant with opposite leaves. The flowers are produced in clusters at the top of the plant. The flowers have three styles and the yellow petals have black dots along their edges. It is introduced and considered invasive in some states.
Habit photoPW
Flower photoPW