Hazelnut Tree

Corylus is a genus of deciduous trees and large shrubs commonly called hazels or filberts. Its male catkins appear in early spring, and some species are cultivated for edible nuts; mature size and harvest traits depend on the species. ## Form and seasonal interest The [RHS Corylus profile](https://www.rhs.org.uk/plants/30715/corylus/details) describes broad leaves, early-spring catkins, and nuts, while [Kew’s genus treatment](https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:13489-1) places Corylus in the Betulaceae family. The genus includes multiple species, so the recorded dimensions and hardiness range are general planning values rather than a species-specific guarantee. Allow space for the mature tree or shrub and consider where falling nuts and leaves can be collected. ## Garden use Hazels can work as specimen shrubs or small trees and, for suitable nut-bearing species, as part of an edible landscape. Their catkins provide early-season interest before many other woody plants leaf out. Confirm the species and pollination requirements when choosing a plant for nut production. ## Maintenance Water new plants during establishment and keep the root area free from competing weeds. Prune only as needed to remove damaged or crossing stems, following advice for the identified species.