Because I have no discipline when it comes to plants, another bed between the sidewalk, street, and stop sign is home to daylilies, irises, and other lovelies that I can't resist (and that attract hummingbirds).
Tough plants like rudbeckia, monarda, and echinacea ask for almost nothing and put on quite a show. They really don't seem to mind being three feet from the sidewalk.
A streetside garden is a strange mix of public and private. Before such a garden can exist, someone has to decide to create it, hoping that the neighbors won't mind. Once it exists, it becomes an object of public comment and, one hopes, enjoyment. Many conversations have taken place while puttering in the garden, and I have enjoyed the sight of total strangers taking photographs, not realizing that the gardener was weeding, hidden behind a tall plant.
Of course, the public nature of an urban garden can have disadvantages. This Orienpet lily lost the top two feet of its bloom stem when a passerby decided to remove it and take it home.
But the plant keeps blooming, anyway. There is probably a message there.