Shasta Viburnum. The effect one gets from a mature 'Shasta' in full flower is very moving, with its layers of white lacecap flower heads. It only gets to 6' or so feet high with up to twice the spread. If there are other clones nearby for pollination, one will get quite a show of red berries in the fall as well. Grow in full sun to part shade. This is another one of the great Dr. Don Egolf's selections from the National Arboretum.