Autumn Jazz is a registered cultivar of the species Viburnum dentatum, which is also known as Ralph Senior or commonly known as arrowwood. Autumn Jazz viburnum is prized for its vibrant fall foliage in mixed hues of purple, yellow and red. It is a deciduous shrub with an upright growth form that reaches up to 12 feet in height and 10 feet in spread. The spring flowers are creamy white and the fall and winter fruits a deep bluish black.
Prune your Autumn Jazz viburnum shrub within two weeks after bloom has finished for the season. Timing pruning this way will preserve the bulk of the following seasons' buds and bloom.
Prune away any damaged, dead, dying or crossing and abrading branches down to the crown of the plant and pull the cuttings clear from the canopy.
Prune the tips of branches as needed to reduce the size of the viburnum or to improve the shape or symmetry of the shrub.