Native: Western Coast United States
General Notes:
An Acer macrophyllum in Los Altos Hills is registered as a California Big Tree. It measures 61 feet high, with a trunk circumference of 174 inches and a crown spread of 76 feet.
Tree Characteristics
- Drought tolerant.
- Shape: Oval or Rounded
- Foliage: Deciduous, Palmate, Medium Green, Gold
- Height: 30 - 75 feet.
- Width: 30 - 50 feet.
- Flowers: Inconspicuous. Fragrant Yellow. Flowers in spring.
- Fruit: Brown or Mostly Green Winged Seed, Large (1.50 - 3.00 inches), fruiting in winter or summer.
- Bark: Red Brown, Fissured.
- Shading Capacity: Dense in Leaf, Moderate out of Leaf
- Litter Issue is Dry Fruit.
Tree Site Conditions & Constraints
- Zones: Sunset 2 - 9 and 14 – 24, USDA Hardiness 5-9
- Exposure: Full Sun to Full Shade.
Pests & Disease Information
- Resistant: Oak Root Fungus.
- Susceptible: Beetle Borers, California Flathead Borer and Caterpillars, Sudden Oak Death, Root Rot, Oak Root Rot, Annosus Root Disease, White Mottled Rot, Leaf Spot and Verticillium.
Health, Safety & Environmental Concerns
- Branch Strength: Medium.
- Root Damage Potential: High.
- Health Hazard: Allergy
- Biogenic Emissions: Moderate.
- Attracts: Bees
Source:
SelecTree. "Acer macrophyllum Tree Record." 1995-2018. Feb 22, 2018. https://selectree.calpoly.edu/tree-detail/acer-macrophyllum
Updated: June 20, 2023