ARIZONA WALNUT
Juglans major
FAMILY Juglandaceae
SYNONYMS
Juglans rupestris var. major
ADDITIONAL COMMON NAMES
NOGAL
ARIZONA BLACK WALNUT
NEW MEXICO WALNUT
See: all Juglans
GENERAL INFO
Tolerates hot climates, but needs deep soil and moderate moisture.
Native range: Arizona, New Mexico, and Northern Mexico
Native range: Arizona, New Mexico, and Northern Mexico
TREE CHARACTERISTICS
Tree Shape: RoundedFoliage Type: DeciduousMaximum Tree Height: 30 feetCanopy Width: 30-50 feetGrowth Rate: ~24 in/yearLeaf Arrangement and Leaf Form: Alternate, Pinnately CompoundLeaf Shape: Spear-shapedLeaf color: GreenFall Color: YesFlowers: InconspicuousFlower Type: Has either male or female reproductive parts (dioecious)Flower Time: SpringFruit: Large Brown or Mostly Green NutFruiting time: FallFruit Value: EdibleBark Color: Black or Dark Brown, Furrowed, RidgedLitter Type: Dry Fruit
SITE CONDITIONS
Recommended Planting Area: Greater than 7'Water Use Rating: MediumSunset Climate Zone: 10 - 13Shade Tolerance: NoUSDA Hardiness Zone: 6, 7Soil Texture: Loam or SandSoil pH: Neutral to Very AlkalineSalt Tolerance: Low
CONSIDERATIONS
Branch Strength: Medium StrongRoot Damage Potential: ModeratePotential health issues: AllergyWildlife interactions: Attracts birds, squirrelsDisease and Pest susceptibility: Sooty Mold, Armillaria, Root Rot and AphidsDisease Resistance and Pest Resistance: VerticilliumUtility Friendly: NoWCISA Appraisal: Suggested LCANT 24" box, Group 3, Approx. cross sectional area 3.80 sq. in.
External Resources
CITE THIS TREE
"SelecTree. UFEI. "Juglans major Tree Record." 1995-2025. Cal
Poly State University, San Luis Obispo. Accessed on Apr 28, 2025."
< https://selectree.calpoly.edu/tree-detail/746 >
< https://selectree.calpoly.edu/tree-detail/746 >
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