box elder (Acer negundo)

Native: California

General Notes:

An Acer negundo in Oak Glen is registered as a California Big Tree. It measures 49 feet high, with a trunk circumference of 228 inches and a crown spread of 74 feet.

Tree Characteristics

  • Rounded or Umbrella Shape.
  • Foliage: Deciduous, Pinnately Compound Odd, Light Green, Gold
  • Height: 40 - 50 feet.
  • Width: 35 - 40 feet.
  • Flowers: Inconspicuous. Green to Pink. Flowers in Spring.
  • Fruit: Prolific, Beige or Red Winged Seed, Medium (0.50 - 1.50 inches), fruiting in Summer.
  • Bark: Black or Dark Gray, Blocky or Furrowed.
  • Shading Capacity: Dense in Leaf, Moderate out of Leaf.
  • Litter Issue: Dry Fruit, Leaves and Twigs.​

Tree Site Conditions & Constraints

  • Zones: Sunset 1 - 10 and 12 - 24. USDA Hardiness 5 - 8.
  • Exposure: Full Sun to Partial Shade.​

Pests & Disease Information

  • Susceptible: Aphids and Beetle Borers, Leaf Blight, Fusarium, Powdery Mildew, Root Rot and Verticillium.

Health, Safety & Environmental Concerns

  • Branch Strength: Weak.
  • Root Damage Potential: Moderate.
  • Health Hazard: Allergy and Irritant
  • Biogenic Emissions: Moderate.
  • Attracts: Mammals

Source:

SelecTree. "Acer negundo Tree Record." 1995-2018. Feb 22, 2018.
< https://selectree.calpoly.edu/tree-detail/acer-negundo >

 box elder
box elderbox elder