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Juglans nigra – Black Walnut

Additional information

Size

,

Common Name

Type

Family

Native?

US Native Plants

Native Range

Eastern and Central North America

Zone

4, 5, 5b, 6, 7, 8, 8b, 9

Height Range (ft.)

50 to 75

Spread (ft.)

40 to 60

Bloom Time

Bloom Description

flowers, Green, inconspicuous, Small, yellowish-green catkins

Sun

Water

Maintenance

Suggested Use

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Tolerate

, ,

Growth Rate

,

Attracts

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Juglans nigra – Black Walnut

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Juglans nigra, or Black Walnut, is a large native canopy tree valued for its wildlife-friendly nuts, towering form, and ecological importance.

$35.99$45.99

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Additional information

Size

,

Common Name

Type

Family

Native?

US Native Plants

Native Range

Eastern and Central North America

Zone

4, 5, 5b, 6, 7, 8, 8b, 9

Height Range (ft.)

50 to 75

Spread (ft.)

40 to 60

Bloom Time

Bloom Description

flowers, Green, inconspicuous, Small, yellowish-green catkins

Sun

Water

Maintenance

Suggested Use

, , ,

Tolerate

, ,

Growth Rate

,

Attracts

, ,

Product Description

Juglans nigra, commonly known as Black Walnut, is a large, stately deciduous tree native to the eastern and central United States. Known for its strong wood, valuable nuts, and broad canopy, Black Walnut can grow 50 to 80 feet tall with a wide-spreading crown. Its compound leaves provide light shade in summer, while its deep taproot and allelopathic properties (juglone production) influence nearby plant growth. Black Walnut is best suited to large properties, restoration projects, and native habitat plantings where it can provide food, shelter, and soil stabilization.

Why choose Black Walnut:

  • Wildlife value: Provides nuts for squirrels, birds, and other wildlife

  • Native canopy tree: Supports biodiversity and offers long-term landscape structure

  • Durable and long-lived: A strong native tree with ecological and historical importance

Cultivating tips:

  • Sun exposure: Requires full sun for optimal growth

  • Soil needs: Prefers deep, well-drained soils; tolerates a range of conditions

  • Maintenance: Minimal once established; avoid planting sensitive species nearby due to juglone

Designs for your garden:

  • Native woodland or edge plantings: Best used in large, open naturalized areas

  • Restoration and reforestation: Supports native ecosystems and soil health

  • Wildlife plantings: Produces nuts and provides cover for many species

Ecological benefits:

  • Native keystone tree: Hosts numerous insects and supports diverse wildlife

  • Nut producer: Important food source for mammals and birds

  • Erosion control: Deep root system stabilizes soils and improves drainage

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Juglans nigra – Black Walnut

$35.99$45.99
Frequently Asked Questions

Is Black Walnut native to the United States?

Yes. Juglans nigra is native to the eastern and central United States, commonly found in rich bottomlands, woodlands, and along riverbanks. It is a long-lived native hardwood tree valued for its ecological contributions, edible nuts, and high-quality timber.

How large does Black Walnut grow?

Black Walnut is a large, deciduous tree that typically grows 50 to 75 feet tall and 50 to 75 feet wide, though it can reach over 100 feet in ideal conditions. It develops a broad, rounded canopy and has deep roots and strong structural form, making it well-suited for large properties, restoration areas, or naturalized settings.

What are the ideal growing conditions for Juglans nigra?

Black Walnut thrives in full sun and prefers deep, fertile, moist, and well-drained soils. It is hardy in USDA zones 4 through 9 and performs best in open areas where it has room to develop a wide canopy. It is drought-tolerant once established but benefits from consistent moisture during early growth.

Is Black Walnut good for pollinators and wildlife?

Yes. While it is wind-pollinated and doesn’t attract pollinators, Black Walnut provides important food and habitat for wildlife. Its nuts are eaten by squirrels, deer, foxes, and birds, and it serves as a host plant for native moths. The tree also contributes to biodiversity in native woodland ecosystems.

Is Black Walnut deer-resistant, and are there any concerns?

Black Walnut is not typically browsed by deer due to its strong aroma and bitter compounds. However, it produces juglone, a natural chemical that is toxic to many nearby plants, including tomatoes, apples, and azaleas. This allelopathic effect can make companion planting more challenging near its root zone.

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