Juglans nigra 'Black Walnut'

Name: Juglans nigra 'Black Walnut'
Brand: Evergreen Trees Direct
SKU: JUGNIGBLA40cm/45L
Price: 220.00 AUD
Availability: InStock

$220.00

Tax included. Shipping calculated at checkout.

1000 in stock

Title: 40cm/45L

40cm/45L

Current Stock Height Guides

40cm/45L: Enquire within for height guide information.

Trade Customers

We supply advanced trees to landscapers, developers, architects, and councils Australia-wide. Trade clients receive fast quotes, expert advice, and access to premium stock with reliable freight.

About Juglans nigra 'Black Walnut'

Juglans nigra, known as Black Walnut, is a majestic deciduous tree valued both for its exceptional timber and its striking presence in the landscape. Growing 15–30 meters tall and wide, it features pinnately compound leaves that provide lush green shade in spring and summer, turning a beautiful yellow in autumn.

Its rounded canopy and straight trunk create a stately form, making it a magnificent shade tree for large gardens and parks. While prized by woodworkers for its dark, rich wood, the Black Walnut also adds natural beauty to outdoor spaces. It thrives best in full sun with well-drained soil and is drought-tolerant once established.

This tree looks excellent when you want to combine functional shade with timeless elegance, offering a bold statement in spacious landscapes while demanding low maintenance for lasting impact.

Key Information to Know

Evergreen / Deciduous

Juglans nigra 'Black Walnut' is an Deciduous (Defoliates throughout colder months) Tree

Mature Height & Width

Mature Height: 20m - 30m Approximately

Mature Width: 15 – 30 meters

Juglans nigra 'Black Walnut' is expected to grow 40 – 60 cm per year (moderate to fast) .

Frost Tolerance

Is Juglans nigra 'Black Walnut' frost tolerant?

Juglans nigra 'Black Walnut' is Frost Hardy – Survives heavy and frequent frost without damage.

Flowering Information

Juglans nigra produces long, greenish-yellow male catkins and small, inconspicuous female flowers in mid- to late spring. The blooms are subtle and largely hidden within the canopy, with the tree’s seasonal interest coming more from its bold foliage and developing walnuts than from its flowering display.

Native Information

Is Juglans nigra 'Black Walnut' an Australian Native? No

Juglans nigra 'Black Walnut' is Native to Eastern North America, from southern Canada through the United States, where it grows naturally in fertile, well-drained soils along river valleys and forests.

Wildlife Value

Its highly nutritious walnuts provide food for birds and small mammals, while the broad, spreading canopy offers excellent nesting and shelter habitat for small birds. The textured bark supports insects and microfauna, and the leaf litter contributes to a rich woodland ecosystem beneath the tree.

Sunlight Information

Juglans nigra 'Black Walnut' will thrive best in:

Full Sun

Preffered Soil

Juglans nigra performs best in deep, well-drained loam or sandy loam soils and prefers slightly acidic to neutral conditions. It may struggle in compacted clay or very shallow soils unless improved with organic matter to enhance drainage and root depth. Keep soil evenly moist during establishment, then provide deep, occasional watering as the tree matures to support strong structure, nut development and long-term vigour.

Botanical Information

Common Name: Black Walnut

Genus: Jacaranda

Botanical Species: Juglans nigra

Family: Juglandaceae

Botanical Name: Juglans nigra 'Black Walnut'

Landscape Uses

Shade Tree
Feature Tree
Rural Property Planting

Juglans nigra 'Black Walnut' works in an:

Edible Garden – integrates fruit, herbs, and productive plants.
Woodland Garden – layered, naturalistic design under dappled light.
Low-maintenance Garden – resilient choices for easy care and year-round appeal.

Planting, Spacing & Care

How to Plant Juglans nigra 'Black Walnut':

Select an Ideal Location: Choose a sunny spot with well-draining soil.

Dig a Planting Hole: Dig a hole as deep as the root ball and twice as wide.

Position the Tree: Place the Black Walnut tree in the hole, ensuring the top of the root ball is level with the surrounding soil.

Backfill with Soil: Fill the hole with soil, gently packing it to remove air pockets.

Water Thoroughly: Water the tree thoroughly after planting to help settle the soil.

Feature Planting: Space 10 – 15 m apart to allow full canopy development

Hedging & Screening: Not suitable

Avenue Planting: Space 12 – 15 m apart for formal canopy spacing

Caring for Your Juglans nigra 'Black Walnut':

Watering: Young Black Walnut trees require regular watering to establish deep roots. Mature trees can tolerate dry spells.

Pruning: Prune to remove dead or crowded branches during the dormant season.

Fertilization: Apply a balanced fertilizer in spring to support healthy growth.

Ideal Drainage: Prefers deep, fertile, and well-drained soil.

Sandy Soils: Requires organic amendments to ensure sufficient moisture and nutrient supply.
Clay Soils: Must be well-amended to improve drainage and prevent root rot.
Loamy Soils: Ideal, particularly if deep and rich in organics.
Acidic or Alkaline Soils: Performs best in slightly acidic to neutral soils; adjust pH accordingly.

Juglans nigra 'Black Walnut' is expected to grow 40 – 60 cm per year (moderate to fast) .

Fast Growth Rate

Root Ball Dimensions (Width × Depth) For Planting

Use this as a reference when digging your planting hole. We recommend digging at least 10% wider than the dimensions below to encourage strong root development.

30cm Pot: 33cm (W) × 30cm (D)
40cm/45L Pot: 44cm (W) × 41.5cm (D)
50cm Pot / 70L Pot: 55cm (W) × 41.8cm (D)
100L Bag: 50.6cm (W) × 52.8cm (D)
150L Bag: 66cm (W) × 55cm (D)
200L Bag: 71.5cm (W) × 60.5cm (D)
300L Bag: 88cm (W) × 63.8cm (D)
400L Bag: 99cm (W) × 66cm (D)
500L Bag: 122cm (W) × 66cm (D)
750L Bag: 134cm (W) × 69cm (D)
1000L Bag: 146.3cm (W) × 71.5cm (D)
2000L Bag: 176cm (W) × 82.5cm (D)

Ideal Conditions

Northern NSW (Byron, Coffs, Armidale)
Sydney & Central Coast
South Coast NSW (Illawarra to Bega)
Inland NSW / Tablelands (Orange, Bathurst, Canberra)
Melbourne & Surrounds (Metro, Bayside, Geelong, Bellarine, Mornington)
Western District & Central VIC (Ballarat, Bendigo, Hamilton)
Gippsland (Latrobe Valley, East Gippsland)
Adelaide Metro & Coastal
Adelaide Hills & Barossa

Thrives in

Full Sun

Frost Tolerance

Frost Hardy – Survives heavy and frequent frost without damage.

Drought Tolerance

As a young tree it requires regular watering, but once established Black Walnut develops moderate drought tolerance. It performs well in warm, dry conditions provided it receives deep, occasional watering during extended dry spells to maintain canopy health, nut production and steady growth.

Flowering Information

Does Juglans nigra 'Black Walnut' flower?

Yes - Flowers

Flowering Period:

Spring

Flower Type:

Not Applicable

Flower Colour:

Not Applicable

Frequently Asked Questions

Frequently Asked Questions (FAQs):

Q: Can I plant other vegetation near Black Walnut trees?
A: Exercise caution when planting other vegetation near Black Walnut trees, as they release juglone from their roots, which can inhibit the growth of certain plants.

Q: What is the primary use of Black Walnut trees?
A: Black Walnut trees are primarily valued for their high-quality timber, which is used in various woodworking applications. Additionally, they provide shade and ornamental beauty in landscapes.

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