Saint Francis is actually the patron saint of animals. Saint Fiacre is the real patron saint of gardening. However, statues of Saint Francis, usually accompanied by birds and sometimes by a deer, are popular in home gardens. Has anyone ever seen even a single statue of Saint Fiacre? Statues of Snow White are more common, but her only experience with horticulture was one bad apple.
There is good garden statuary, and there is bad garden statuary. Some of the bad can be exceptionally so. It is one of the many things that backyards are for. Not much offends neighbors like a bronzed lawn mower on a pedestal in the middle of a paved front yard. Yes, it has happened. Perhaps there is beauty in the diversity of unique artistic expression. Saint Francis cannot do it all.
Garden statuary and other forms of garden art work like any other household art. For many of us, it merely provide dramatic form and perhaps color that is are more permanent than flowers are. For others, there is a certain degree of self-expression associated with the careful selection and display of garden art. Some of us take this even further by creating our own distinctive garden art.
Fountains and wind chimes are often incorporated into gardens to detract from less pleasant ambient sound, or simply because they sound nice. A loud fountain probably would not obscure the sound of a freeway in the neighborhood; but the sound of even a modest fountain might be adequately distracting. Wind chimes are as variable as the delicate to bold breezes that operate them.