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Cornell University

Species: Juglans nigra

(jug'lanz nye'grah)

Juglans nigra

Black Walnut

Found on Course Walks

Birch, Larch, Magnolias and Nut Trees at Arboretum, Wet Site Plants;
Birch, Larch, Magnolias and Nut Trees at Arboretum

Map of plant locations

(Plant location data may be incomplete)

In Collection(s):

Tree Identification Guide

Cultivars

Some rare varieties exist for nut production, few selections have been made for horticultural purposes.

'Laciniata'

Ornamental Characteristics

Tree > 30 feet

50' - 75' (equal spread)

Deciduous

massive, upright spreading; oval/rounded crown

Environmental Characteristics

Full sun

4b

Can tolerate acid to alkaline soil (pH 5.0 to 8.0)

Occasionally saturated or very wet soil; Consistently moist, well-drained soil; Occasional periods of dry soil
See graphic below

Insect Disease

No diseases listed

Bare Root Transplanting

Difficult

Other

native to eastern U.S. and southern Ontario; taproot - difficult to transplant; nuts can be a litter problem; often restricts growth of other plants near it by exuding an inhibitory chemical from its roots.

Native Range Map

Native Range Map Image

Moisture Tolerance Graphic

Please view this page on a tablet or larger screen for the moisture graph

Moisture Tolerance

Moisture graphic
Occasionally saturated or very wet soil
Consistently moist, well-drained soil
Occasional periods of dry soil
Prolonged periods of dry soil
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