Common Walnut

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Common walnut

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Scientific name: Juglas regia
The Common walnut tree produces a large, brown nut that is familiar to so many of us. It is an introduced species in the UK, and can be seen in towns, gardens and parks.

Top facts


Height: up to 35m

Conservation status

Introduced species.

When to see

January to December


An introduced species, the Common walnut is a tall, deciduous tree, with a short trunk and wide crown. Widely planted in towns, gardens and parks, it produces a large, brown nut that is familiar to many of us, but which is actually housed within a green husk.

What to look for

The Common walnut is most easily recognised in summer and autumn when the large, round, green nuts appear. Its leaves are divided into seven to nine leaflets and smell like polish when crushed.

Where to find


Did you know?

Common walnut was introduced to the UK by the Romans, who grew the tree for its edible nuts. It later became popular for its fine, decorative wood.