Juglans nigra

Common Name
Black walnut
Plant Form
Large Trees
Duration
Perennial
Max Height (ft)
90.0
Growth Rate
Fast
Region
Coastal
Piedmont
Mountain
Hardiness Zone
5, 6, 7, 8, 9

Photographer: Ana Ka'ahanui
Licensed under: CC BY-NC 4.0
Original photo: Original photo

Photographer: Ana Ka'ahanui
Licensed under: CC BY-NC 4.0
Original photo: Original photo

Additional Info

Black Walnut is an extremely valuable and attractive forest tree. It prefers moist, organically rich, well-drained soils in full sun. It prefers full sun and wet to dry loam or sandy high acidic to slightly alkaline soil. It is intolerant of shade.   Common throughout, but in the mountains limited to lower elevations. It may be grown for its edible nuts. Nut production can sometimes begin as early as 6 years but usually takes 20 years for a substantial crop. 

Note: Leaves, stems and roots contain juglone, which inhibits the growth of some plants beneath the tree's dripline (Allelopathy). Plants known to be sensitive to juglone include azaleas, peonies, and some fruits and vegetables, like tomatoes, apples, and blueberries

Wildlife value: Supports Hickory Horndevil, Banded Hairstreak butterfly and Luna moth larvae. Meat of the nut is sweet and edible and a favorite food for squirrels.

Edibility: Nut is sweet and edible

Flower Color
Gold/Yellow
Green
Flower Prominence
Reduced
Bloom Time
Spring
Bloom Month
April
May
Light Requirements
Full sun
Partial sun
Moisture Requirements
Moist
Dry
Soil Texture
Clay
Loamy
Sandy
Seed or Fruit eaten by wildlife?
Yes
Pollinators
Butterfiles
Top 30 for Butterfly and Moth Caterpillars?
Yes
Number of Lepidotera Species Genus Supports
130
Tolerates
Earth Sangha Inventory

Founded in 1997, the Earth Sangha is a nonprofit public charity based in the Washington, DC, region. The Wild Plant Nursery is the most comprehensive source of local-ecotype, native plants in the Washington DC region, and the region’s only facility dedicated exclusively to this type of propagation. “Local-ecotype” plants are propagated from local, wild, naturally-occurring populations and are well-adapted to local conditions and for wildlife species that depend on the local forms, such as pollinators. Inventory is updated on a weekly basis so number may not be accurate.

Pots Available Plugs Available Location Notes
60 0 Row 15 View My Wishlist
Carniola Farms Nursery

Nursery operates Arlington Native Plants & Edibles located at 925 N. Madison St. Arlington Virginia 22205. Plants can be purchased at any time by making an email appointment at carniolafarms@gmail.com. Also, during the during the planting season, they are open some Saturdays from 11AM to 3PM. Check their website for datesThis plant list is from the beginning of the 2025 season and may be out-of-date

In Stock? Notes
Yes View My Wishlist
Beloved Brook's Ruckersville Nursery Inventory

Nursery is open by appointment only. Email them to set up a time. This plant list if from the begging of the 2025 season and may be outdated. If there is something specific that you’re looking for, they recommend you confirm that they have it when you schedule an appointment

Pots Available Plugs Available Pot size:
View My Wishlist