SelecTree: Tree Detail

BOX ELDER
Acer negundo

Acer negundo Acer negundo Acer negundo Acer negundo Acer negundo Acer negundo Acer negundo Acer negundo Acer negundo Acer negundo Acer negundo Acer negundo Acer negundo Acer negundo Acer negundo

Photo Locations: San Luis Obispo, CA, Rancho Santa Ana Botanic Gardens - Claremont, CA, LSU Hilltop Arboretum - Baton Rouge, LA and Finch Arboretum - Spokane, WA

General Notes

Found natively along steams or in bottomlands. Pink flowers emerge in Spring prior to leaves. Grows best in fairly rich, moist, well-drained loam. Tolerates smog. Suckers and reseeds profusely. A. negundo subsp. californicum has larger, velvety leaves than the main species.

Has fragrant Bark.

Native to California.

Trees may be referred to as male or female.

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.

Family: Sapindaceae
Previously listed in the Aceraceae family.

Tree Characteristics

Erect or Spreading and requires ample growing space.

Rounded or Umbrella Shape.

Has Deciduous foliage.

Height: 40 - 50 feet.

Width: 35 - 40 feet.

Growth Rate: 36 or More Inches per Year.

Longevity 50 to 150 years.

Leaves Pinnately Compound Odd, Light Green, Gold, Deciduous.

Flowers Inconspicuous. Green to Pink. Flowers in Spring. Has either male or female flowers (dioecious). Trees may be sold as male or female.

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 Rated as Dense in Leaf.

Shading Capacity Rated as Moderate out of Leaf.

Litter Issue is Dry Fruit, Leaves and Twigs.

Tree Site Conditions & Constraints

Sunset Zones 1 - 10 and 12 - 24.

USDA Hardiness Zones 5 - 8.

Exposure Full Sun to Partial Shade.

Wet to Moist and Well Drained Soil.

Loam or Sand Texture.

Highly Acidic to Highly Alkaline Soil pH.

Seaside Tolerance is Good in Mild Zone.

Pests & Disease Information

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

Health, Safety & Environmental Concerns

Branch Strength Rated as Weak.

Root Damage Potential Rated as Moderate.

Allergy and Irritant Health Hazard.

Biogenic Emissions considered Moderate.

Fire Resistance is Favorable.

Desirable Wildlife Plant.

Attracts Mammals.

Deer Palatable.

Special Uses & Values

Riparian, Screen.

Bonsai.

Cite this tree:
SelecTree. "Acer negundo Tree Record." 1995-2017. Nov 23, 2017.
< http://selectree.calpoly.edu/tree-detail/acer-negundo >

This tree is not part of the SelecTree Nursery Connection. If you would like to see this tree listed, or know of a nursery that sells it, please contact us at ufei@calpoly.edu.