Factsheet N16: Castanopsis & Chrysolepis

The black walnut is a large, fast growing, deciduous tree, growing up to 50 m (160 ft) high in its native habitat, though in Britain rarely more than half that. It is pyramidal when young, becoming spreading and round crowned with age though usually with a long trunk. It has brownish-black bark, deeply furrowed into diamond-shaped ridges, and downy young branches (an easy way to tell it apart from the Common or English walnut, Juglans regia).