black walnut - Juglandaceae Juglans nigra

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Foliage

Bark

Bud

Twig

Fruit

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Taxonomy

Cladeangiosperm
FamilyJuglandaceae
GenusJuglans
Speciesnigra
Common Nameblack walnut
iTree CodeJUNI

Plant Form

FormTree: large, broad canopy
Height100 feet
Spread100 feet
DeciduousYes

Identification Description

Foliagepinnately compound 10-20” long, (10-20) leaflets, may be missing terminal leaflet Leaf Type  Information Icon Compound - Pinnate
Barkdark brown/gray, narrow furrows
Budterminal: pale gray/brown, fuzzy, rounded Bud Arrangement Information Icon Alternate
Twigstout, light brown current twig fuzzy, inside (pith) divided into tan cambers; leaf-scar said to resemble "monkey" face
Flowermale: pendulous catkins; female: small spike, pinkish
Fruitround green husk about golf ball sized, producing dark stain, very fragrant
Fall Coloryellow

Site Characteristics

USDA Zones   info for zones pH LevelsSalt Tolerance
Min4a Min6.5 SoilIntolerant
Max8a Max8.0 SprayIntolerant

Shade ToleranceDrought ToleranceAllelopathy
Intolerant High Yes

Species Status

Nebraska Native Yes Check
U.S. Native Yes Check
Region of OriginUnited States
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