valley oak (Quercus lobate)

Native: California.

General Notes:

Quercus lobata in South of Covelo is registered as a California Big Tree. It measures 153 feet high, with a trunk circumference of 339 inches and a crown spread of 99 feet.

Tree Characteristics

  • Shape: Oval, Rounded or Umbrella
  • Foliage: Deciduous, Obovate and Lobed, Medium to Dark Green, Bronze or Gold
  • Height: 50 - 70 feet.
  • Width: 50 feet.
  • Flowers: Inconspicuous. Flowers in Spring.
  • Fruit: Prolific, Brown Acorn, Medium (0.50 - 1.50 inches), fruiting in Fall or Winter.
  • Bark: Dark Brown, Light Gray or Light Green, Blocky or Furrowed.
  • Shading Capacity: Moderate in Leaf, Moderate out of Leaf.
  • Litter Issue: Dry Fruit.

Tree Site Conditions & Constraints

  • Zones: Sunset 3 - 9 and 12 – 24, USDA Hardiness 7 - 9.
  • Exposure: Full Sun to Partial Shade.

Pests & Disease Information

  • Resistant: Oak Root Fungus and Verticillium.
  • Susceptible: Beetle Borers, Caterpillars, Insect Galls and Scales, Crown Rot, Mistletoe and Root Rot.

Health, Safety & Environmental Concerns

  • Branch Strength: Medium to Medium Strong.
  • Root Damage Potential: Moderate.
  • Health Hazard: Allergy and Poisonous
  • Biogenic Emissions: Moderate.
  • Attracts: Birds and Squirrels.

Source:

SelecTree. "Quercus lobata Tree Record." 1995-2018. Mar 20, 2018.
< https://selectree.calpoly.edu/tree-detail/quercus-lobata >

 valley oak
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