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Black Walnut
Catalogue A# 0098-100 PL10
GPS 45D 44' 1" N / 108D 37' 6" W

Juglans nigra

Family: Juglandaceae

Origin: North America

Common name: Black Walnut

Location: Old Pond-West of pond-center

Number in accession: 3

Note: Trees are first to lose leaves in Fall-Fruited 2018

2018 verified (Author-Tom Elpel) non-accessioned specimen was discovered in the Asian Habitats collection. It is located at the upper tiger viewing area/main pathway junction. No fruit was seen in 2018 and will keep watch in coming years.

​This 19 inch Black walnut provides overall benefits of: $136 every year. 

Tree or Plant Type: Tree
        Foliage: Deciduous (seasonally loses leaves)
        Native Locale:  North America
        Landscape Uses: Parkway/street, Shade tree, Specimen
        Size Range: Large tree (more than 40 feet)
Mature Height: 50-75 feet
Mature Width: 30-50 feet
        Light Exposure: Full sun (6 hrs direct light daily)
        Hardiness Zones: Zone 4, Zone 5, Zone 6, Zone 7, Zone 8, Zone 9
        Soil Preference: Alkaline soil, Moist, well-drained soil
        Acid Soils: Intolerant
        Alkaline Soils: Moderately Tolerant
        Salt Spray: Tolerant
        Soil Salt: Intolerant
        Drought Conditions: Moderately Tolerant
        Poor Drainage: Moderately Tolerant
        Planting Considerations: May be difficult to find in nurseries, Messy fruit/plant parts
        Ornamental Interest: Fall color, Edible fruit
        Season of Interest: Early fall
        Flower Color & Fragrance: Inconspicuous
        Shape or Form: Round
        Growth Rate: Moderate
        Transplants Well: Yes
        Wildlife: Cavity-nesting birds, Game mammals, Songbird


The black walnut is a North America native tree that provides excellent shade for large properties. It needs to be sited with care, since the tree produces a chemical that is toxic to some other plants. The fruit is a rounded, yellow-green husk, containing a nut that is a food source for squirrels. The black walnut also attracts the banded hairstreak butterfly, serving as a caterpillar host. 

overallbenefitsFRPE19Park or other vacan
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