Clethra alnifolia - Summersweet
Has very fragrant white flowers in the summer. Leaves are dark green, which turn yellow in the fall. A great plant for mid summer flowers and does not get much taller than 4 feet. Will spread by underground runners and make a nice large shrub in a few short years. Give it about a 1/4 to 1/2 day of sun for it to really do its best.
Sun to Shade, Moist to Dry Soil, Summer, 3-5 ft Tall, Zones 3-9