About This Plant

The bark of Corylus sp., commonly known as hazelnut or filbert, is typically smooth and greyish-brown when the tree is young. As the tree matures, the bark may develop shallow furrows and become more textured, adding visual interest to the trunk. The overall texture can vary between species within the Corylus genus. In terms of height, Corylus sp., are generally medium to large shrubs or small trees. Depending on the specific species and environmental conditions, they can reach heights ranging from 10 to 25 feet (3 to 7.5 meters) or more. The growth habit can be multi-stemmed, creating a bushy appearance that is well-suited for hedgerows or as part of a naturalized landscape

The Story


The leaves of hazelnut/filbert, are generally deciduous and characterized by a heart-shaped or roundish form. The leaf margins are doubly serrated, featuring fine teeth along the edges. The texture of the leaves is often slightly veined and has a smooth, green surface. Depending on the specific species, the size of the leaves may vary, but they are typically medium to large. The arrangement is alternate on the branches, and in the fall, the leaves undergo a seasonal transformation, displaying warm hues of yellow, orange, or red before eventually falling.


Members of the Corylus genus, commonly known as hazelnuts or filberts, produce distinctive fruits known as nuts. The nuts are enclosed in a husk, which partially or fully surrounds the hard shell protecting the seed. The overall structure is often referred to as the “involucre.” The husk is usually leafy and may have a fringed or ragged appearance. As the hazelnuts mature, the husks typically split open, revealing the hard-shelled nuts inside. The nuts themselves are generally round or oval in shape and have a hard, woody shell.
Home » Attractions » The Arboretum » Features » Various Hazels & Filberts