Corylus avellana, commonly known as the European hazelnut or filbert, is a deciduous shrub or small tree that belongs to the family Betulaceae. It is native to Europe and western Asia but has been widely introduced and naturalized in other parts of the world.
The plant typically grows up to 6 meters in height and has a rounded shape. It produces leaves that are green and toothed, and the flowers are yellowish-brown catkins that appear in late winter or early spring before the leaves emerge. The edible fruit, called a hazelnut or filbert, is a small, rounded nut that is encased in a hard, woody shell surrounded by a leafy bract.
Hazelnuts have been cultivated for thousands of years for their culinary and medicinal properties. They are commonly used in confectionery, baked goods, and as a flavoring in coffee and liqueurs. They are also a good source of nutrients, including healthy fats, protein, and fiber.
Corylus avellana is adaptable to a wide range of soils and growing conditions and is relatively easy to grow. It prefers full sun to partial shade and well-drained soil. The plant is also tolerant of drought, pests, and diseases.
Overall, Corylus avellana is a versatile and valuable plant that provides both aesthetic and practical benefits to the landscape and human diet.