This winterberry is a hybrid between the Eastern North American Ilex verticillata and the Asian Ilex serrata, referred to by its hybrid formula rather than a formal cultivar name. The cross combines the hardiness and native adaptability of its American parent with the fine-textured habit of its Japanese counterpart. Maturing to 6 to 10 feet tall and wide, it grows in full sun or part shade, preferring organically rich, acidic soil with good drainage, though it settles readily into sand, loam, or clay. It spreads by suckers and will form colonies over time if not managed, a trait that makes it useful for naturalizing slopes or stabilizing wet ground near streams and ponds.

Red berries are the winter payoff, provided a male pollinizer of the appropriate bloom time is planted nearby. One male is sufficient to pollinate three to five female shrubs, so positioning matters. This hybrid draws songbirds, pollinators, and specialized bees, and holds up against deer browsing, wet soil, and urban pollution. It works in rain gardens, along water features, as a hedge, or anchoring the back of a border where a large, adaptable, ecologically useful shrub is needed.