Shade and Ornamental Trees: Juglans (Walnut)
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Juglans regia 'Cascade'
The Cascade cultivar of the walnut tree has green foliage and produces medium sized round delicious nuts. It is partly self-fertile, however will produce more walnuts if pollinator is present.
Juglans cinerea
Butternut or White Walnut is native to eastern USA and Southeastern Canada but it is endangered in Canada. Butternut is similar to black walnut but generally smaller, bark less fissured, fewer leaflets and its nut is more oval than round. Compound leaves can be to 75cm long; twigs, leaves and nuts all have hairs. The fruit is oblong with a deep furrowed shell enclosed in a thick husk covered with sticky, oily hairs. Shade intolerant. The common name "White Walnut" refers to the light colour of the wood. Cinerea (cinereus(L) =ash grey) refers to the ash grey colour of the bark, which has flat-topped ridges. Roots secrete juglone, a chemical that can kill (certain) plants growing nearby: azalea, rhodo, blueberry, peony, tomato, pepper, potato. Azalea, rhodo, blueberry, peony, tomato, pepper & potato.
Juglans regia 'Manregion'
The Manregion cultivar of the English Walnut is a traditional cultivar of the English Walnut and produces large, delicious walnuts which are easy to open. Manregion is a late blooming walnut and is partly self fertile.
Juglans nigra
Black Walnut is a large tree, eventually huge, which is renowned for its valuable veneer wood and has been the target of tree rustlers across its natural habitat. Produces edible fruit (nut) in early fall. Not the tree for the average garden. May be difficult to underplant as its roots produce a chemical, juglone, which can be toxic to some plants. Large, pinnate, compound green leaves Roots secrete juglone, a chemical that can kill (certain) plants growing nearby: azalea, rhodo, blueberry, peony, tomato, pepper, potato.
Juglans regia
Juglans regia is a variety of the walnut tree commonly know as 'English Walnut.' It has deep green leaves and produces a delicious nut, commonly known as a walnut. The tree is self fertile as both male and female flowers are found on the tree.