Corylus avellana is a large dispersal shrub, bush or small tree belonging to Betulaceae family. The name Hazel is derived from the Anglo-Saxon word for bonnet, Haesel. It is also called filbert or cobnut. The shrubs basically can spread up to 10-15 ft. Trees start to bear fruit when they are 3-4 years old, and their life span is up to 40 year. Trees normally produce 12 kg of dried nuts each. Leaves are 2-3 inch in length, roughly ovate, acuminate, and vaguely lobed with doubly indent margins.