Walnut, Black

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SIU 150th logo

This tree is one of the 150 trees initially included in the arboretum to coincide with the campus's 150th anniversary celebration.

Scientific Name:
Juglans nigra


Native to:
Nova Scotia to Pennsylvania, west to Minnesota and Iowa

Mature Height and Width:
50-75 feet by 50-75 feet, can reach 150 feet high

Additional Notes:
One of the most finicky indigenous trees, black walnut can start its life in many settings, but requires prime soil conditions to attain a large size and remain healthy.  The heavy nuts that drop in the fall can be an unnerving, and sometimes painful, reminder to this species identity for anyone passing underneath.