Arizona Walnut
Scientific name: Juglans major
Overview
Arizona Walnut is a small to medium-sized deciduous hardwood native to the southwestern United States and northern Mexico. Juglans major belongs to the Juglandaceae family and is one of the distinctive western North American members of the walnut genus. It occurs primarily in Arizona and New Mexico and extends southward into Mexico, commonly growing along streams, canyon bottoms, washes, and other locations where dependable moisture is available.
The wood generally ranges from medium brown to dark chocolate brown, sometimes displaying reddish, grayish, or purplish undertones. Sapwood is considerably paler and usually contrasts clearly with the heartwood. Grain can range from straight to irregular or figured, while texture is generally medium and relatively even.
Arizona Walnut is not a major commercial timber because trees are typically smaller and less abundant than Black Walnut. When suitable material becomes available, however, its attractive coloration and good woodworking characteristics make it useful for furniture, turning, carving, cabinetry, decorative boxes, gunstocks, and other specialty projects.
Quick Facts
- Common Name: Arizona Walnut
- Alternate Common Name(s): Arizona Black Walnut, River Walnut
- Scientific Name: Juglans major
- Region: North American Hardwoods
- Tree Size: Approximately 30–60 ft (9–18 m) tall, occasionally larger, with trunks commonly 1–2.5 ft (0.3–0.75 m) in diameter
- Average Dried Weight: Approximately 38–42 lbs/ft³ (610–675 kg/m³), with natural variation
- Janka Hardness: Reliable standardized species-specific value is not widely documented
- Grain: Straight to irregular
- Texture: Medium and relatively even
Identification Characteristics
Arizona Walnut generally produces medium to dark brown heartwood that may display chocolate-brown, reddish-brown, grayish, or subtle purplish coloration. Darker streaks may occur within individual boards.
Sapwood ranges from cream to pale yellowish brown and normally contrasts strongly with mature heartwood. Grain is usually straight in clear trunk material but may become irregular, wavy, or figured around crotches, branches, and other areas of changing growth.
Key identification traits include:
- Medium to dark brown heartwood
- Occasional reddish, grayish, or purplish tones
- Pale cream to yellowish-brown sapwood
- Strong heartwood and sapwood contrast
- Straight to irregular grain
- Medium, relatively even texture
- Occasional darker streaking and figure
Working Properties
Arizona Walnut generally has favorable woodworking characteristics. Its moderate density allows it to be machined without the extreme cutting resistance associated with much harder hardwoods.
Straight-grained material should plane and shape cleanly with sharp tools. Irregular or figured grain requires additional care to reduce tear-out. The wood turns and carves well and can develop an attractive surface under oils and clear finishes.
- Turns well
- Carves well
- Sands to a smooth surface
- Glues satisfactorily
- Accepts oils and clear finishes well
- Irregular grain may require lighter machining passes
Safety Note
Walnut wood dust may cause skin, eye, or respiratory irritation in sensitive individuals. Repeated exposure to fine hardwood dust should be minimized.
Appropriate dust collection, eye protection, and respiratory protection are recommended during sawing, routing, turning, carving, and sanding.
Common Uses
Its attractive coloration, moderate density, good workability, and potential figure make Arizona Walnut suitable for numerous woodworking applications, including:
- Furniture
- Cabinetry
- Wood turning
- Carving
- Decorative boxes
- Gun stocks
- Interior woodworking
- Small furniture components
- Decorative objects
- Specialty woodworking
Sustainability & Notes
Arizona Walnut occupies a very different environment from the eastern North American walnuts familiar to many woodworkers. In the arid Southwest, the species is strongly associated with locations where additional moisture is available, including canyon bottoms, streams, washes, and riparian corridors.
These environments can support considerable wildlife diversity and provide important habitat within otherwise dry landscapes.
Because Arizona Walnut is not a major plantation or commercial forestry species, woodworking material is often obtained through local sawmills, storm damage, land-management activities, urban-tree salvage, or other legitimate removals.
Preserving mature native trees and riparian walnut communities is generally more important than developing the species as a large-scale timber resource.
Comparative Notes & Related Species
Claro Walnut – A western North American walnut famous for rich coloration and highly figured lumber, providing an excellent comparison with Arizona Walnut.
Southern California Walnut – A geographically restricted California walnut useful for comparing the western members of the Juglans genus.
Little Walnut – A smaller walnut of the south-central and southwestern United States whose range and dry-region adaptations provide a particularly useful comparison.
Related Guides
Walnut Species Guide
Explore walnut species from around the world and compare Arizona Walnut with Claro Walnut, Southern California Walnut, Little Walnut, Black Walnut, Andean Walnut, and other members of Juglans.
Sapwood vs. Heartwood Explained
Learn why walnut develops such pronounced differences between pale sapwood and darker heartwood and how these zones differ in function and appearance.
How to Start a Wood Collection
Learn how to build a geographically and botanically diverse collection of documented wood specimens from around the world.
Labeling and Cataloging Wood Samples
Explore methods for recording scientific names, geographic origin, acquisition information, dimensions, and provenance for collector specimens.
Finishing Oils vs. Polyurethane on Exotic Species
Compare finishing systems and learn how oils and film finishes influence color depth, grain contrast, protection, and the appearance of darker hardwoods.
Compare Wood Properties
See how this species ranks in density and hardness using our Wood Density & Janka Hardness Chart. You can also explore Hardest Woods, Softest Woods, and Most Dense Woods for quick comparisons.
Collector Notes
Arizona Walnut is an excellent collector species because it represents the walnut genus within the distinctive landscapes of the American Southwest.
A collection containing Arizona Walnut alongside Claro Walnut, Southern California Walnut, Little Walnut, Black Walnut, and Andean Walnut can demonstrate how Juglans species extend across dramatically different climates and geographic regions while retaining recognizable walnut wood characteristics.
Arizona Walnut specimens with documented canyon, watershed, county, or regional provenance can be especially interesting because populations may be geographically isolated.
Collector specimens should retain the scientific name Juglans major, geographic origin, acquisition date, and source whenever available.
Share Your Photos of This Species
Do you have lumber, wood samples, tree photographs, woodworking projects, furniture, carvings, turnings, musical instruments, or other items made from this species?
Exotic Woods of the World welcomes photographs from woodworkers, collectors, sawyers, researchers, and wood enthusiasts around the world. Selected submissions may be featured on this page and throughout our website to help document and showcase real-world examples of this species.
When submitting photos, please include the common name, scientific name (if known), a brief description, and any information you would like us to share with the image.
Wood Sample Collection
This species is part of an ongoing effort to document and preserve wood samples from around the world.
Learn more about contributing to the collection:
Resources
Authoritative botanical and forestry references used in compiling information about this species include:
• USDA Forest Service – Wood Handbook: Wood as an Engineering Material
https://www.fpl.fs.usda.gov/products/publications/
• The Wood Database – Global reference for wood identification, physical properties, and woodworking characteristics
https://www.wood-database.com/
• Royal Botanic Gardens, Kew – Plants of the World Online – Botanical taxonomy and species distribution database
https://powo.science.kew.org/
• International Union for Conservation of Nature (IUCN Red List) – Global conservation status assessments
https://www.iucnredlist.org/
• Convention on International Trade in Endangered Species (CITES) – International trade regulations for protected plant species
https://cites.org/
Additional forestry publications, academic research papers, and regional timber studies may also be referenced where available.
Love This Species?
Enjoy learning about this wood species?
Help support the continued growth of Exotic Woods of the World by participating in our Adopt a Species program. Your support helps fund species research, educational content, photography, videos, and future conservation awareness initiatives.
Support Forest Conservation
This species is part of the growing Exotic Woods of the World reference archive, dedicated to documenting and preserving knowledge of the world’s wood species.
Through the Adopt a Species program, visitors can help support ongoing species research, educational content, photography, video production, and future conservation awareness initiatives.
Contributions help fund the continued expansion of this archive while promoting sustainable forestry education and the long-term appreciation of the world’s forests.
Interested in supporting this species? Visit our Adopt a Species and Conservation Partners pages to learn more.
Availability & Where to Buy
Exotic hardwood availability can vary significantly depending on region, sustainability regulations, and supplier inventory.
As this archive grows, recommended suppliers and specialty wood retailers will be listed here to help woodworkers locate responsibly sourced material.
Lumber Suppliers:
Availability varies — see the Where to Buy Exotic Woods page for current sources.
Related Tools & Products:
Availability varies — see the Where to Buy Exotic Woods page for current sources.
Share This Wood Species
Stay Connected
Follow the latest species additions, educational resources, videos, conservation initiatives, and major project milestones through our Site Updates archive.
The Site Updates archive provides a permanent record of new content, library growth, and future developments across Exotic Woods of the World.