University of Illinois Extension
University of Illinois Extension - Selecting Trees for Your Home
http://www.urbanext.uiuc.edu/treeselector
Black Walnut
Juglans nigra
Black Walnut form
Size:

Small

Medium
Size: large
Large
Exposure/ Light Requirements:
Full Shade not required.
Full Shade
Full Sun required.
Full Sun
Partial Sun/Shade not required.
Partial Sun/Shade
Pests and Problems:

Bacterial Disease

Environmental Damage

Fungal Disease

Insect Damage


Walnut anthracnose often causes earlyleaf fall and so spoils fall color. Difficult to transplant due to deep taproot.
Hardiness Zone: 5 - 8 
[Find Your Zone]
Mature Height: 50-90 Feet
Features: Coarse compound leaves in summer; edible nuts in round husks in early autumn; fall color can be a good yellow.
Culture: Full sun; moist, well drained soil; tolerates drought, alkaline pH.
Mature Form: Oval to rounded with an open crown
Native To: United States (and Illinois)
Soil Conditions:
Soil condition: DryDry
Soil condition: Moist, Well-DrainedMoist, Well-Drained
Wet
Tolerance:
Tolerance: Alkaline SoilAlkaline Soil
Tolerance: Dry SitesDry Sites
Salt
Soil Compaction
Wet Sites
Tolerance: WindWind
Uses:
Massing
Patio
Screen
Use for: Shade.Shade
Specimen
Street
Wind Break
Foliage Color: Green
 
Fall Foliage Color: Yellow
 
Additional Notes: The roots of black walnut produce a chemical, juglone, that can be toxic to certain plants.

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