Saint John's Wort

Saint John's Wort - D800e, 70-200 f/4 VR @ 165mm, f/5.6, 1/60s, ISO 400

Saint John's Wort is both in invasive plant species and also well known for its medicinal uses.  I didn't know much about it, just saw the one wall of the sunken garden at Butchart gardens covered with them and thought it made for a pretty image.