Blackhaw spreads readily by root suckers and is adapted to moist, fertile soils. This native plant is commonly available in the nursery industry. Ovate leaves have finely toothed leaf margins. Petioles have narrow, not wavy, margins. Winter floral buds are valvate, short, and pointed.
Twigs are pubescent and have a red-brown covering or hairy bloom.
Flowers are borne in terminal clusters after the foliage is partially expanded. April or May. Fruits are bluish-black and bloomy, and they mature in September or October. The edible fruit is sweet and was used for jams and jellies.