Clustered bellflower (Campanula glomerata) is a species of woodland edges and roadsides. Here, it is hidden in the vegetation along a walking path; Oregano with its pink flowerheads is more striking.
The dark blue little bells grow in clusters along and at the end of the stems. Clustered bellflower begins to flower in June, and in August, it is over; it really is a summer flower.
Sometimes a flowerhead has only a few flowers, on big plants they are larger and fuller.
The leaves are rather long and heart-shaped at their base.