Hazelnut is the nut of the hazel and therefore, includes any of the nuts deriving from species of the genus Corylus, especially the nuts of the species Corylus avellana. It also is known as cobnut or filbert nut according to species. The kernel of the seed is edible and used raw or roasted, or ground into a paste. Hazelnut field, fruit garden, orchard, autumn. Regular spring row orcharding ordu blacksea turkey agriculture farming cultivation.