|Among the hardiest of the hollies hailing from northern Japan. 'Blue Princess' has a true holly look in a dense, broad and shrubby plant, reaching 15 feet high by 10 feet wide. It has very abundant dark red berries, purple stems and extremely dark blue-green foliage. Leaves are small, glossy and spiny. Needs rich, slightly acidic soil. This cultivar is by far considered the best fruit producer.