Juglans nigra

black walnut

Juglandaceae

Plant Specifics

Form:

tree

Size:

100-120 ft

Life Span:

long-lived perennial

Flower Color:

Fruit Color:

brown

Phenology:

Deciduous. Blooms (inconspicuous) in spring. Nuts ripe in fall. Yellow fall color.

Noted For:

Interesting Foliage

Landscaping

Recommended Uses:

Specimen tree. Woodlot tree.

Considerations:

Nuts can be abundant on the ground in fall.



Husks can stain.



Tree roots, nuts, and leaves exude an effective herbicide (juglone) to reduce competition. Use with care in the landscape, it can poison birches and many herbaceous plants.

Light:

Full Sun, Part Sun

Moisture Tolerance:

Somewhat moist, no flooding ---- to ---- Somewhat long very dry periods

Salt Water Flooding Tolerance:

Unknown

Salt Spray/Salty Soil Tolerance:

Moderate. Tolerant of salty wind and may get some salt spray.

Soil or Other Substrate:

Sand, Clay, Loam

Suitable to Grow In:

8A,8B

Ecology

Wildlife:

Mammals

Seeds eaten by squirrels and other odents.  May be a significant food the fox squirrels ( https://www.fs.fed.us/database/feis/plants/tree/jugnig/all.html )

Native Habitats:

Dry mesic woods. Second bottoms. Prefers rich soils.