Holly - Oak Leaf™Oak Leaf is an upright holly shrub with emerald green foliage that resembles oak leaves. Like other hollies, Oak Leaf serves well as a yard hedge, whether formal or informal. It also can be used as a specimen, or mass planting for screening. It has a medium growth rate and reaches a mature height of about 15 20 feet with a spread of 6 8 feet. It is hardy in Zones 6 9 and grows best in full sun with moist, well drained soil that is slightly acidic.