The open plant encyclopedia
Snap a photo or search by any name to see how to care for it, where it comes from, whether it's safe, and a 3D model you can turn.
The plants people record most in your country, and ones that grow there wild.
Filter by what you want to do, shape, origin, country, care and safety.
Corylus
Also called Hazelnut, Hazels, Filbert, Filbert, Hazel, Hazelnuts
Hazels (genus Corylus) are deciduous trees and large shrubs from the temperate Northern Hemisphere, usually placed in the birch family, grown for their edible nuts and as ornamental hedging or garden trees, with common members including the common hazel (C. avellana) and filbert (C. maxima).
Hazels are plants of the genus Corylus of deciduous trees and large shrubs native to the temperate Northern Hemisphere. The genus is usually placed in the birch family, Betulaceae, though some botanists split the hazels (with the hornbeams and allied genera) into a separate family Corylaceae. The fruit of the hazel is the hazelnut; the trees are also grown as ornaments in hedges or gardens.
At least 21 species of fungus have a mutualistic relationship with hazel. Lactarius pyrogalus grows almost exclusively on hazel, and hazel is one of two kinds of host for the rare Hypocreopsis rhododendri. Several rare species of Graphidion lichen depend on hazel trees. In the UK, five species of moth are specialised to feed on hazel including Parornix devoniella. Animals which eat hazelnuts include red deer, dormouse and red squirrel.
Hazels have many uses and for this reason have been called the "Swiss Army knife of plants".
American hazelnut · Hazel · Colchian Hazel · Beaked hazelnut · Himalayan hazelnut · Siberian hazelnut · Filbert
Text excerpted from the Wikipedia article Hazel by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
