Corylus avellana, commonly known as the common hazel, is a deciduous shrub or small tree native to Europe and parts of Asia. It typically grows to a height of 3 to 8 meters and features round, serrated leaves. The plant produces edible nuts, known as hazelnuts, which are rich in nutrients and often used in various culinary applications. The common hazel thrives in well-drained soil and prefers sunny to partially shaded locations. It is often found in woodlands, hedgerows, and gardens. Additionally, Corylus avellana plays a role in supporting local wildlife, providing food and habitat for various species.