Description: ‘Sparkleberry’ is a hybrid of Ilex verticillata and Ilex serrata, Fine Tooth Holly, which is a native of Japan and China. The berries of Fine Tooth Holly are much smaller than those of our winterberry, and they are borne much more profusely. ‘Sparkleberry’ is a good example of hybridization, because the berries are larger than those of I. serrata but far more profuse than I. verticillata. ‘Sparkleberry’ makes quite a show on a fairly large upright plant which looks very similar to our native winterberry. This plant was introduced by the National Arboretum and is a nice compliment to the other winterberries we grow.