Black Walnut

Scientific Name:   Juglans nigra


Large, sweet, edible nuts. Heart-shaped leaf scars. Dark bark becoming ridged and deeply furrowed with age, forming a diamondback pattern as the ridges interlace. Inner bark chocolate colored. Roots produce a natural herbicide, juglone, to reduce nearby competition (allelopathy).

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Black Walnut

Genus species: Juglans nigra
Common Name: Black Walnut
Family Name: Juglandaceae  
Deciduous trees, often resinous and aromatic; leaves alternate, odd-pinnately compound; flowers unisexual (plants monoecious), bracteate, the male in catkins, the female solitary or in spikes; fruit a drupelike nut, enclosed in an involucre.
Seed Type: Angiosperm
Origin:  
Native: native to North America.
Non-native: not native to North America.
Introduced Native: native to North
America, but not Rowe Woods.
* Definitions based on the USDA
terminology
Native
Category:Tree
Flower Color:Green/Brown
CNC Habitat: Krippendorf Arboretum
Nature Playscape
Herb Wall
Identified by:A. Swanson
Months in Bloom:  
The highlighted month(s) in this chart indicates the month(s) the plant has been observed blooming.
Jan Feb Mar Apr May Jun
Jul Aug Sep Oct Nov Dec

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