An Illustrated Guide to the Native Plant Garden by Susan Carpenter
Winterberry (Ilex verticillata) is a deciduous shrub suited to mesic to wet, neutral or acid soils. It grows in full sun or partial shade. It blooms in May-June with clustered white flowers on separate male and female plants. The striking fruit color develops in fall. The berries may persist after the leaves fall, unless birds eat them first. This medium sized shrub is maintained by renewal pruning in the dormant period—removing ¼ of the stems (the oldest stems) at the base.