Arboretum
"A man does not plant a tree for himself, he plants it for posterity." - Alexander Smith   
Black Walnut
(Juglans nigra)

Donated by Ralph's Hair Kut Kove
Tree Map Location: # 1


Black Walnut tree Black Walnut leaf Black Walnut twig Black Walnut fruit


Leaf: Alternate, pinnately compound, 12 to 24 inches long with 10 to 24 leaflets (poorly formed or missing terminal leaflet), leaflets are ovate-lanceolate, finely serrate, and 3 to 3 1/2 inches long, rachis is stout and somewhat pubescent; yellow-green to green above, slightly paler below.  
Flower: Monoecious; males are single-stemmed catkins, 2 1/2 to 5 1/2 inches long; females on short spikes near twig end, yellow-green in color, appearing in late spring.  
Fruit: Round, 2 to 2 1/2 inches across, with a thick, green indehiscent husk. The husk contains an irregularly furrowed, hard nut that contains sweet, oily meat (edible), mature in late summer to fall.   
Twig: Stout, light brown, with a buff-colored chambered pith; buds are tan, and large with a few pubescent scales; leaf scars are 3-lobed, resembling a "monkey face".  
Bark: Brown on surface, darker brown when cut, ridged and furrowed with a rough diamond pattern.  
Form: A medium to large tree up to 100 feet in height that develops a straight, clear bole with a narrow crown under competition, twigs and branches quite stout.  
Source: College of Natural Resource Virginia Polytechnic Institute and State University  
Website: http://www.cnr.vt.edu/dendro

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