SelecTree: Tree Detail
PALO ALTO SWEETGUM
Liquidambar styraciflua 'Palo Alto'
Photo Locations: Hoyt Arboretum - Portland, OR, Los Angeles County Arboretum - Arcadia, CA and private home - Bakersfield, CA
Resistant to oak root fungus. Hardy to about -10 degrees F. Crown spread 15 - 25 feet.
Additional Common Names
PALO ALTO SWEETGUM, LIQUIDAMBAR
Erect or Spreading and requires ample growing space.
Has Deciduous foliage.
Height: 80 feet.
Width: 40 feet.
Growth Rate: 24 Inches per Year.
Longevity Greater than 150 years.
Leaves Lobed and Palmate, Medium to Dark Green, Red, Orange or Multicolored, Deciduous.
Flowers Inconspicuous. Flowers in Spring. Has separate male and female flowers on the same tree (monoecious).
Prolific, Brown or Mostly Green Capsule with Winged Seeds, Large (1.50 - 3.00 inches), fruiting in Fall Wildlife use it.
Bark Light Green or Light Gray, Fissured.
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 3 - 9 and 14 - 24.
USDA Hardiness Zones 6 - 9.
Exposure Full Sun to Partial Shade.
Wet to Dry Soil.
Clay, Loam or Sand Texture.
Highly Acidic to Slightly Alkaline Soil pH.
Seaside Tolerance is Good in Mild Zone.
Pests & Disease Information
Resistant to Verticillium. Susceptible to Invasive Shot Hole Borer, Aphids, Caterpillars, Scales and Spider Mites, Armillaria, Anthracnose, Chlorosis and Sooty Mold.
Health, Safety & Environmental Concerns
Branch Strength Rated as Medium.
Root Damage Potential Rated as High.
None Known Health Hazard.
Desirable Wildlife Plant.
Not Deer Palatable.
Wildlife use Fruit.
Special Uses & Values
Cite this tree:
SelecTree. "Liquidambar styraciflua 'Palo Alto' Tree Record." 1995-2020. Feb 27, 2020.
< https://selectree.calpoly.edu/tree-detail/liquidambar-styraciflua-palo-alto >
SelecTree Nursery Connection Map
Cal Poly / ESRI