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Winged elm

Ulmus alata

Also called Small Leaf Elm, Wahoo Elm

Winged elm
Photo: Ronnie Nijboer, CC0

Winged elm (Ulmus alata) is a small to medium deciduous tree from the southeastern and south-central United States, known for the corky wings on its branchlets. It tolerates a wide range of soils and wet ground but grows slowly and is the least shade-tolerant North American elm.

Family
Ulmaceae (Ulm family)
Grows as
Tree
Light
Shade
Water
Water regularly while establishing, then tolerates a wide range of moisture, including periodic ponding.
Soil
Tolerant of many soils, including fertile alluvial and wet soils.
Temperature
Hardy in temperate climates; native to the warm southern US, so protect young trees from severe frost.
How easy
Moderate
Native range
C. & SE. U.S.A.
Climate
temperate

About

Ulmus alata, the winged elm or wahoo, is a small- to medium-sized deciduous tree endemic to the woodlands of the southeastern and south-central United States. The species is tolerant of a wide range of soils, and of ponding, but is the least shade-tolerant of the North American elms. Its growth rate is often very slow, the trunk increasing in diameter by less than 5 mm (3⁄16 in) per year. The tree is occasionally considered a nuisance as it readily invades old fields, forest clearings, and rangelands, proving particularly difficult to eradicate with herbicides.

How to grow it

Ulmus alata is rarely cultivated beyond its natural range. It remains in commercial production in the US, and is occasionally available in Europe. At the beginning of the 19th century, the tree was one of the three American elm species cultivated in ornamental plantations in Britain, but is now rare there. Several specimens are grown in New Zealand.

Other Ulmus plants

American elm · Ulmus 'Androssowii' · Cedar elm · Wych Elm · European White Elm · Ulmus lanceifolia · Ulmus minor 'Plotii' · Chinese elm · Siberian elm · Slippery elm · Rock elm · Elm

Text excerpted from the Wikipedia article Ulmus alata by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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