SelecTree: Tree Detail
Photo Locations: Mildred E. Mathias Botanical Garden - UCLA, The Living Desert - Palm Desert, CA and Tucson Mountain County Park - Tucson, AZ
Utility friendly tree.
An open and whispy small tree with beatuful peeling cream to white bark. Perfect for a dry garden. Normally evergreen, this tree may drop its leaves in a drought or cold spell. The lengthy needle-like leaf stalks remain and are prominent after the small leaflets drop.
Has fragrant Flower.
Native to Mexico, Sonoran Desert.
Additional Common Names
PALO BLANCO, WILLARD ACACIA
Spreading or Weeping with a High Canopy.
Has Evergreen to Partly Deciduous foliage.
Height: 10 - 20 feet.
Width: 12 - 15 feet.
Growth Rate: 12 to 24 Inches per Year.
Longevity Less than 50 years.
Leaves Linear, Gray Green, No Change, Evergreen to Partly Deciduous.
Flowers Showy. Fragrant Pale Yellow. Flowers in Spring or Summer. Has perfect flowers (male and female parts in each flower).
Brown Pod, Large to Very Large (1.50 to 3.00 or more inches), fruiting in Spring, Summer or Fall.
Bark Cream or White, Exfoliating or Smooth.
Shading Capacity Rated as Moderately Low in Leaf.
Litter Issue is Dry Fruit.
Tree Site Conditions & Constraints
Sunset Zones 12 - 24.
USDA Hardiness Zones 9 - 11.
Exposure Full Sun.
Moist to Dry and Well Drained Soil.
Clay, Loam or Sand Texture.
Slightly Acidic to Highly Alkaline Soil pH.
Health, Safety & Environmental Concerns
Branch Strength Rated as Weak.
Allergy Health Hazard.
Attracts Birds and Bees.
Not Deer Palatable.
Special Uses & Values
Cite this tree:
SelecTree. "Acacia willardiana Tree Record." 1995-2018. Apr 23, 2018.
< https://selectree.calpoly.edu/tree-detail/acacia-willardiana >