SelecTree: Tree Detail
Photo Locations: Sacramento State University - Sacramento, CA, Cal Poly State University - San Luis Obispo, CA, UC Davis Arboretum - Davis, CA and Hoyt Arboretum - Portland, OR
Utility friendly tree.
Very drought tolerant. Found in Western California and Northern Baja, California. Some consider it endangered.
Native to Southern California and Baja California.
Quercus dumosa var. dumosa
Quercus dumosa var. elegantula
Additional Common Names
COASTAL SCRUB OAK, COASTAL SAGE SCRUB OAK, SCRUB OAK, NUTTALL'S SCRUB OAK
Oval, Rounded or Umbrella Shape.
Has Evergreen foliage.
Height: 6 - 12 feet.
Width: 6 - 10 feet.
Growth Rate: 12 to 24 Inches per Year.
Longevity 50 to 150 years.
Leaves Elliptic and Hollylike, Medium to Dark Green, No Change, Evergreen.
Flowers Inconspicuous. Flowers in Spring. Has separate male and female flowers on the same tree (monoecious).
Brown Acorn, Medium (0.50 - 1.50 inches), fruiting in Fall or Winter.
Bark Dark Gray, Furrowed or Smooth.
Shading Capacity Rated as Moderately Dense in Leaf.
Litter Issue is Dry Fruit.
Tree Site Conditions & Constraints
Sunset Zones 15 - 17 and 21 - 24.
USDA Hardiness Zones 7 - 9.
Exposure Full Sun.
Highly Acidic to Slightly Alkaline Soil pH.
Seaside Tolerance is Good in South Coast.
Pests & Disease Information
Resistant to Verticillium. Susceptible to Coddling Moths, Armillaria and Root Rot.
Health, Safety & Environmental Concerns
Branch Strength Rated as Strong.
Root Damage Potential Rated as Low.
Allergy and Poisonous Health Hazard.
Biogenic Emissions considered High.
Fire Resistance is Favorable.
Desirable Wildlife Plant.
Attracts Birds and Squirrels.
Special Uses & Values
Cite this tree:
SelecTree. "Quercus dumosa Tree Record." 1995-2018. May 20, 2018.
< https://selectree.calpoly.edu/tree-detail/quercus-dumosa >