SelecTree: Tree Detail
Photo Locations: Central Park - New York City, NY, Cal Poly Campus - San Luis Obispo, CA, Sacramento, CA, Hoyt Arboretum - Portland, OR, The National Arboretum - Washington, DC and Arnold Arboretum - Boston, MA
Not recommended for planting because of Dutch Elm Disease which is fatal to the tree. Requires a moderate amount of water. Hardy to 0 degrees F.
Native to Eastern North America.
An Ulmus americana in San Jose, CA is registered as a California Big Tree. It measures 89 feet high, with a trunk circumference of 173 inches and a crown spread of 68 feet.
Erect or Spreading and requires ample growing space.
Rounded, Spreading or Vase Shape.
Has Deciduous foliage.
Height: 100 feet.
Width: 100 feet.
Growth Rate: 36 or More Inches per Year.
Longevity Greater than 150 years.
Leaves Oblong to Ovate, Dark Green, Golden or Yellow or Orange, Deciduous.
Red. Flowers in Winter. Has perfect flowers (male and female parts in each flower).
Brown or Mostly Green Samara, Small (0.25 - 0.50 inches), fruiting in Spring Wildlife use it.
Bark Dark Brown or Dark Gray, Exfoliating, Furrowed or Ridged.
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 - 21.
USDA Hardiness Zones 3 - 9.
Exposure Full Sun to Partial Shade.
Clay, Loam or Sand Texture.
Highly Acidic to Highly Alkaline Soil pH.
Seaside Tolerance is Good in Mild Zone.
Pests & Disease Information
Susceptible to Aphids, Beetle Borers, Beetle Leaves and Scales, Dutch Elm Disease, Armillaria, Phytophthora, Root Rot, Sooty Mold and Verticillium.
Health, Safety & Environmental Concerns
Branch Strength Rated as Medium Weak
Root Damage Potential Rated as High.
Allergy Health Hazard.
Biogenic Emissions considered Low.
Fire Resistance is Favorable.
Desirable Wildlife Plant.
Attracts Birds and Squirrels.
Wildlife use Fruit.
Special Uses & Values
Cite this tree:
SelecTree. "Ulmus americana Tree Record." 1995-2020. Oct 27, 2020.
< https://selectree.calpoly.edu/tree-detail/ulmus-americana >