Please, smaller shrubs to edge a casual lawn, i.e.,
those whose shapes allow them to be mowed under (with less than a decade's growth!). The problem is that for utility reasons (climate, heat, drought tolerance when needed) we chose a short, running grass. About 2/3 of the lawn will be surrounded by a shrub and tree border backed by woods that will shade out spread beyond the edges. The other 1/3 will present more than enough edging challenge in itself.
Large shrubs are easy, so many wonderful ones to choose from, but the lawn isn't large enough (wanders kind of long and occasionally narrow along the hillside) to ring with 6'+ shrubs, so we need mostly short and middle-height ones toward the front.
The grass is light green, so rich deeper greens especially desirable. Deciduous fine, evergreens for some definition in all seasons also especially desirable. Flowers nice but not at all necessary. This will be a cool green garden (once the trees grow up, anyway) for us to enjoy from the porch, with only occasional flowers to set it off. I do want it to be beautiful, though.
Zone 7, mostly sunny, hot humid summers, warm nights, winter stretches into teens common, acid soil, not dry but should not need a lot of water.
Thanks very much for any and all suggestions. I really need them!