Great St. Johnswort
Magnificent vivacious plant with flowers that can be up to 5cm wide. Easy to cultivate, prefers damp soil and full sun. It can grow very tall with the rich soil conditions.
The top of the upper stems will terminate/branch into 1-5 short stems, each with a single flower.
Used in borders, woodland margins or slopes.
Easily grown in moist, well-drained soils in full sun to part shade.
Cut off seed heads to prevent spread. Pull unwanted volunteers in Spring.