(Juglans nigra)
The Walnut Family (Juglandaceae)

Alternate, compound, deciduous leaves have as many as 12- 24 leaflets along the stout, light brown twig. Leaf is aromatic when crushed.


Grows in moist, fertile and sunny locations.

Interesting Facts: 

Wood is in high demand by woodworkers for its rich, dark beauty. Certain plants will not grow under Black Walnut because of the chemicals produced by the roots of the tree. Preferred host for the Luna and Regal moths.

1.5 - 2.5” round nut covered by a fleshy, thick, light green husk.
Catkins (male tassel-like flowers) and small female flowers, both found near tip of stem, are yellowish-green and brown.
Wildlife value: 
Squirrels eat the nuts, deer browse the buds, mice and rabbits nibble young tree stems and Eastern Screech Owls roost in the tree.
Leaf type: 
Wildlife value: 
Tree dimensions: 

Leaf length: 12.00-24.00 inches
Tree height: 70.00-100.00 feet

Where to find Black Walnut on the Louisiana State Arboretum Trails:

TER - Walker Terrace 22.0

Refer to our Live Map to locate this species and its interpretative signage on the trail system.