Blue flowers with scruffy foliage, snail (or caterpillar) snack that is done blooming, a weed that was found growing next to some knotweed on a retaining wall in front of the ocean, a tree, and a sedum-like plant.
1. Peach-leafed bellflower, Campanula persicifolia. 2 Echinacea purpurea. 5. Sedum, possibly Sedum kamtschaticum.
The coneflower might instead by another, such as Rudbeckia fulgida. Flowers are coming, making it easier to tell. The one on the wall is a pea family plant, perhaps even a native Lathyrus. The tree is an unhappy Japanese cherry, the 'Anna Rose Whitney'-like rhododendrons also need some help - probably more water and fertilizer.