Wild black walnut trees are alternate bearing — meaning that a good crop of nuts is produced every other year. Black Walnut (Juglans nigra) from North America is also cultivated as ornamental and naturalized. To ensure that he can meet the growing demand for black walnuts during lean years as well as plentiful ones, Hammons dries and sets aside a portion of the harvest in strong years. They typically have a short trunk and broad crown, though can be narrower if grown in a woodland situation. The black walnut has a globose nut (meaning it is roughly globular or round), while the nuts on the butternut tree … It isn’t common but it self seeds in the warmer counties. Walnut Trees. A walnut is the nut of any tree of the genus Juglans (Family Juglandaceae), particularly the Persian or English walnut, Juglans regia. A walnut is the edible seed of a drupe, and thus not a true botanical nut. The bark is smooth and olive-brown when young, developing fissures and fading to silver-grey with age. While oak and buckeye trees aren’t a huge concern when it comes to livestock, much more caution should be taken when dealing with walnut trees. Beneath the tree, you usually find whole walnuts or their husks. After full ripening for its edible seed when the shell has been discarded, it is used as a garnish or a snack. Walnut is a deciduous broadleaf tree which can grow to 35m. The leaf scars along twigs look like an upside-down shamrock with five or seven bundle scars. Walnuts, which includes the butternut tree, aka the white walnut, release a substance called juglone from their roots, which is toxic to many other trees and plants. Black Walnut has leaves arranged in more numerous groups (9 to 23) and the terminal leaf is usually smaller. It is commonly consumed as a nut. The enormous wild walnut tree has finally been claimed back by Lagou Nature Reserve in Liuzhou, southern China's Guangxi Province, after travelling more … These leaves are longer and pointier with a toothed margin. The Black Walnut Tree is a large deciduous tree native to Eastern North America that produces edible nuts in the fall.Growing to heights of 120′ (40 m) by 50′ wide (~15 m) in optimum conditions, the Black Walnut can make an excellent shade tree. Twigs are stout, green and curving.