SelecTree: Tree Detail
Photo Locations: Dallas Arboretum - Dallas, TX, The Morton Arboretum - Lisle, IL, Cal Poly State University Campus - San Luis Obispo, CA, Finch Arboretum - Spokane, WA and The National Arboretum - Washington, DC
Large acorns form in mossy cups.
Native to Eastern United States.
Additional Common Names
BURR OAK, MOSSY CUP OAK
Erect or Spreading and requires ample growing space.
Oval, Rounded or Umbrella Shape.
Has Deciduous foliage.
Height: 60 - 80 feet.
Width: 30 feet.
Growth Rate: 24 to 36 Inches per Year.
Longevity Greater than 150 years.
Leaves Obovate and Lobed, Glossy Medium Green, Bronze or Gold, Deciduous.
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 Light Gray or Red Brown, Fissured.
Shading Capacity Rated as Moderately Dense in Leaf.
Shading Capacity Rated as Moderate out of Leaf.
Litter Issue is Dry Fruit.
Tree Site Conditions & Constraints
Sunset Zones 1 - 11 and 14 - 23.
USDA Hardiness Zones 3 - 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 Aphids and Spider Mites.
Health, Safety & Environmental Concerns
Branch Strength Rated as Strong.
Root Damage Potential Rated as Moderate.
Allergy and Poisonous Health Hazard.
Desirable Wildlife Plant.
Attracts Birds and Squirrels.
Cite this tree:
SelecTree. "Quercus macrocarpa Tree Record." 1995-2018. Feb 24, 2018.
< https://selectree.calpoly.edu/tree-detail/quercus-macrocarpa >