Viburnum opulus var. americanum, also formerly known as Viburnum trilobum and commonly referred to as American cranberrybush, cranberrybush viburnum or less commonly mooseberry, is a large deciduous shrub or small tree native to much of the northern half of North America, from New Jersey to Washington state. Commonly growing in a dense, suckering, multi-stem form, cranberrybush is commonly found in low woodlands and bogs, growing to a mature size of 8-12' tall and wide. As a viburnum, mooseberry produces showy lacecap clusters of white flowers in the late spring and, although flowers are not fragrant, these blooms are highly attractive to a wide variety of pollinators, with members of the viburnum genus playing host to more than 100 species of caterpillar! After it flowers, pollinated American cranberrybush blossoms turn to clusters of sour, bitter, cranberry-like berries that can be used for jams, jellies, and backed goods.
Viburnum opulus var. americanum berries are also very attractive to birds and other wildlife (yes, including moose in their northern ranges), but tend to srhivel and drop after the first frost, limiting their use for foraging animals in the winter. Due to their usualy wild habitat, American cranberrybush grows best in full sun to partial shade and in consistently moist, well-draining sandy loams. As it typically grows in a variety of medium to wetter locations to a rather large size, Viburnum opulus var. americanum is an excellent specimen plant, but also works great for large hedges and borders or for naturalizing in woodland and wetland areas. In the home garden, cranberrybush viburnum does best with a healthy layer of mulch and good, well-draining soil, so it may be finicky for eastern shore gardens, but will reward gardeners with a unique edible experience and an explosive autumn color show with yellows, reds, and purples.