• Photo by: Shirley Denton, Suncoast Chapter FNPS
  • Photo by: Shirley Denton, Suncoast Chapter FNPS
  • Photo by: Shirley Denton, Suncoast Chapter FNPS
  • Photo by: Shirley Denton, Suncoast Chapter FNPS

Juglans nigra

black walnut

Nomenclature

Common Name:

black walnut

Synonym(s):

Genus species:

Juglans nigra

Family:

Juglandaceae

Plant Specifics

Form:

tree

Size:

100-120 ft

Life Span:

Long-lived perennial

Flower Color:

NA

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:

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Availability:

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Propagation:

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Light:

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Moisture Tolerance:

Always Flooded---------------------------------Extremely Dry

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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

Soil pH:

Acidic to circum-neutral

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.

Comments:

Ethnobotany:

Valuable for lumber which is often used for cabinetry.



People eat the nuts, but they are difficult to extract from their shells.

General Comments:


  • Will not produce flowers/seed unless it gets adequate winter cold, hence not recommended for use south of its native range.

  • Salt spray tolerance was based on comments about tolerance to winter road salt in the northeastern US.