Clethra Alnifolia (Sweet Bush) 'hummingbird' is an intensely fragrant shrub with very floriferous spikes of white flowers in late summer when little else is in flower; neat, compact habit of growth and good fall color; needs moist acidic soil. There is some suckering. This is a hummingbird  magnet! Summersweet has masses of beautiful spikes of fragrant white flowers rising above the foliage from mid to late summer, which are most effective when planted in groupings. It has green foliage throughout the season. The glossy round leaves turn an outstanding harvest gold in the fall. The fruit is not ornamentally significant. Summersweet is a multi-stemmed deciduous shrub with a more or less rounded form. Its average texture blends into the landscape, but can be balanced by one or two finer or coarser trees or shrubs for an effective composition.This shrub will require occasional maintenance and upkeep, and is best pruned in late winter once the threat of extreme cold has passed. It is a good choice for attracting bees and butterflies to your yard. 3 gal