ORIGIN Hazelnuts are native to many parts of the Northern Hemisphere. They grow on deciduous trees in many regions of the world. The two major hazelnut-growing areas are Turkey and Oregon in the USA. All species of hazelnut shrubs and trees produce edible nuts. The hazelnut has a husk around the shell that is very unusual and distinctive from most other tree nuts. Hazelnut trees range from 3 to 36 metres in height. The roundish or oblong brown nut is usually 1 to 4 cm long and is partly or wholly enclosed in a husk. Hazelnut trees have deep ...
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