Juglans regia is a large, deciduous tree that can attain heights of 25 – 35 m, with a trunk of up to 2 m in diameter. The tree typically has a short trunk and a broad crown with green foliage that changes to a striking yellow during autumn. The pinnate leaves are glossy green during summer and are particularly fragrant when bruised.

The bark of the Walnut tree is smooth and olive-brown when young, but turns silvery-grey on older specimens with scattered, broad fissures and a rougher texture. Flowering takes place during spring and summer with both the male and female flower present on the same tree. The male flowers are in the form of greenish yellow catkins, while the female flowers are small and fairly inconspicuous.

Fruiting takes place after flowering and the fruit consists of a globular, green husk which contains the well-known, flavoursome walnut. During the ripening process, the husk becomes brittle and the shell of the nut hard. This shell contains the nutmeat which is normally made up of two halves separated by a partition. Walnuts are harvested by shaking or poling the tree and collecting the fallen nuts during autumn. The nuts are fully mature when the green husk starts to break away from the shell. If the nuts are left on the tree or allowed to fall on their own, the husk will rot and stick to the shell.

Walnuts are a rich source of energy and contain health benefiting nutrients, minerals, vitamins and antioxidants. It can be eaten raw or roasted and are often used as an ingredient in salads, baking and cooking.

Juglans regia does not only provide nutrition, but also functions as a majestic specimen tree that would enhance your large garden.