What kind of tree is an oak tree?

An oak is an oak. Oak is a deciduous or evergreen tree of Quercus in Fagaceae, with a height of 25-30 meters or even higher. Its leaves are oval or oval, with dark green front and light green back. Generally, it blooms in April-May in spring, and the fruit matures in September of the following year. Oak has strong adaptability, drought resistance, high temperature resistance, moisture resistance, frost resistance, strong wind resistance, moderate growth speed and wide distribution, and is cultivated in both north and south regions.