Water Oak (Quercus nigra) is medium to large, a semi-evergreen tree. The leaves are dark green and bell-shaped, with alternate arrangement. The Water Oak has a medium fast growth rate, with height increases of more than 24" per year. At maturity, the Water Oak can grow to a height of 50-80’. Unlike the typical Live Oak, the Water Oak grows in a conical form and has a rounded crown at the top. The acorns of the Water Oak also differ from the Live Oak, they are a bit smaller and their caps are woolly, rather than scaly. The Water Oak grows in USDA zones 6-9.