Ulmus americana
A tall, vase-shaped deciduous tree native to eastern North America, fast-growing and valued for shade and urban adaptability, but severely affected by Dutch elm disease and now the focus of disease-resistant breeding.
Common Names
American Elm, Water Elm, White Elm, Florida Elm, Soft Elm
Summary
Ulmus americana, commonly called American elm, is a large deciduous tree native to eastern and central North America, famed for a vase-shaped crown and rapid growth, it typically reaches 60–100 feet in height and 30–60 feet in width, with a broad, spreading form and pendulous branchlets, leaves are alternate, oval to oblong with doubly serrate margins, dark green in summer and turning yellow in fall, the gray-brown bark becomes deeply furrowed with age, the wood is very hard and heavy, and wind-dispersed seeds in winged samaras complete its autumn display; the tree provides shade, urban tolerance, and wildlife habitat, and native habitats include bottomlands, floodplains, and woodlands, cultivation emphasizes full sun to light shade and moist, well-drained soils, with tolerance for a wide range of textures and pH from about 5.5 to 8.0, drought tolerance is moderate and establishment requires regular watering, propagation can be by seed or cuttings, pruning in late winter to early spring helps develop a strong framework, disease pressures include Dutch elm disease and elm yellows, with several cultivars showing resistance such as Valley Forge, Princeton, Jefferson, New Harmony, Creole Queen, and New Horizon, other pests include elm beetles, borers, mites, and scales, uses include street and landscape plantings, reclamation, and wood production for lumber, furniture, veneers, and fuel, and it also supports wildlife by providing seeds, buds, and habitat.
Lifecycle
Perennial
Height
60-80 feet
Spread
30-60 feet
Hardiness Zones
Zones 2-9
Sunlight Requirements
Ideally Full Sun. Tolerates partial sun or partial shade.
Soil Type
Moist, well-drained, nutrient-rich loam soil with a neutral to slightly acidic pH
Soil Drainage
Moist but well-drained, Rich, well-drained loams, Deep, fertile soils with excellent drainage, Well-drained soil (preferably rich soil)
Soil pH
5.5-8.0, Tolerates a wide pH range from acidic to alkaline, No single ideal pH
Bloom Color
Insignificant
Bloom Time
Spring (early spring)
Foliage Color
Green, yellow fall color
Fall Foliage Color
Yellow
Leaf Lifecycle
Deciduous
Growth Rate
Fast growth
Seasons of Interest
Spring and Fall
Propagation Methods
Seeds, Cuttings, Grafting
Attracts Wildlife
Attracts bees, butterflies, birds
Taxonomy
- Taxonomic Rank
- Species
- Author
- L.
- Publication
- Sp. Pl. : 226 (1753)
Superior Taxa
- Kingdom
- Plantae
- Subkingdom
- Pteridobiotina
- Phylum
- Angiosperms
- Order
- Rosales
- Family
- Ulmaceae
- Genus
- Ulmus
Synonyms
Ulmus mollifolia Ulmus dentata Ulmus americana f. alba Ulmus americana var. alba Ulmus americana var. pendula Ulmus americana f. pendula Ulmus americana f. intercedens Ulmus americana f. laevior Ulmus americana f. americana Ulmus floridana Ulmus americana f. ascendens Ulmus americana var. aspera Ulmus americana f. columnaris Ulmus americana var. floridana Ulmus americana f. viridis Ulmus americana var. glabra Ulmus americana var. scabra Ulmus americana var. aurea Ulmus americana var. incisa Ulmus fulva unr. pendula Ulmus obovata Ulmus alba Ulmus americana var. bartramii