SelecTree: Tree Detail

ARROYO WILLOW
Salix lasiolepis

Salix lasiolepis Salix lasiolepis Salix lasiolepis Salix lasiolepis Salix lasiolepis Salix lasiolepis Salix lasiolepis Salix lasiolepis

Photo Locations: Santa Barbara Botanic Garden - Santa Barbara, CA, Quail Arboretum - Encinitas, CA and Regional Parks Botanic Garden, Tilden Regional Park - Berkeley, CA

General Notes

A large shrub or small tree. Tolerates some dry conditions.

Native to Western and Southwestern United States.

Trees may be referred to as male or female.

A Salix lasiolepis in San Juan Capistrano is registered as a California Big Tree. It measures 41 feet high, with a trunk circumference of 89 inches and a crown spread of 49 feet.

Family: Salicaceae

Tree Characteristics

Erect or Spreading with a Low Canopy.

Rounded or Umbrella Shape.

Has Deciduous foliage.

Height: 10 - 35 feet.

Growth Rate: 36 or More Inches per Year.

Longevity Less than 50 years.

Leaves Oblanceolate, Medium to Light Green, Gold, Deciduous.

Flowers Inconspicuous. Flowers in Spring or Winter. Has either male or female flowers (dioecious). Trees may be sold as male or female.

Brown Capsule, Very Small (Under 0.25 inches), fruiting in Summer.

Bark Dark Brown or Dark Gray, Furrowed or Smooth.

Shading Capacity Rated as Moderate in Leaf.

Shading Capacity Rated as Moderate out of Leaf.

Litter Issue is Dry Fruit.

Tree Site Conditions & Constraints

Sunset Zones 1 - 9, 14 - 17 and 22 - 24.

Exposure Full Sun to Partial Shade.

Wet to Moist Soil.

Clay, Loam or Sand Texture.

Highly Acidic to Highly Alkaline Soil pH.

Seaside Tolerance is Good in Mild Zone.

Pests & Disease Information

Resistant to Verticillium. Susceptible to Invasive Shot Hole Borer, Aphids, Beetle Borers, Caterpillars and Spider Mites, Anthracnose, Willow Blight, Armillaria, Phytophthora, Root Rot, Rust and Sooty Mold.

Health, Safety & Environmental Concerns

Branch Strength Rated as Weak.

Root Damage Potential Rated as High.

Allergy Health Hazard.

Biogenic Emissions considered High.

Fire Resistance is Favorable.

Special Uses & Values

Riparian or Screen.

Cite this tree:
SelecTree. "Salix lasiolepis Tree Record." 1995-2018. Dec 19, 2018.
< https://selectree.calpoly.edu/tree-detail/salix-lasiolepis >

This tree is not part of the SelecTree Nursery Connection. If you would like to see this tree listed, or know of a nursery that sells it, please contact us at ufei@calpoly.edu.