White Ash Identification: Leaves, Bark, Seeds, Look-Alikes

White ash is identified by opposite branching, compound leaves with about seven leaflets, pale leaf undersides and a C-shaped leaf scar under each bud. Work through the checks in this order:

• Opposite branching. The University of Wisconsin–Madison emerald ash borer site describes ash as having two branches leaving the stem directly across from each other; most trees are alternate, so a staggered twig rules ash out.
• Compound leaves. NC State Extension records white ash leaves as odd-pinnate with typically 7 leaflets, occasionally 5 or 9, each 3 to 5 inches long with smooth edges.
• Pale underside. NC State describes the underside as whitish-green; Wikipedia calls it glaucous and notes it is lighter than the upper side.
• Leaf scar. Wikipedia calls the C-shaped leaf scar a reliable identification method. In winter this is the check that still works.

Mature bark confirms it: NC State describes light gray to yellow-brown corky bark with deep furrows separating short, pointed ridges in a net-like pattern. For the general ash checklist, see ash tree identification.

Green ash is the tree most often confused with white ash. bplant.org and Wikipedia list these differences:

• Leaflet stalks: white ash leaflets sit on longer stalks with a well-defined base; green ash leaflets taper at the base into a short, winged stalk (bplant.org).
• Leaf color: white ash undersides are lighter than the tops; green ash leaves are similar in color on both sides (Wikipedia).
• Leaf scar: U- or C-shaped around the bud in white ash; straight across or only shallowly notched at the top in green ash (bplant.org; Wikipedia).
• Bark: white ash has long, narrow vertical ridges with deep valleys; green ash bark is flakier and more plate-like, with more horizontal cracks (bplant.org).
• Seed: in white ash the seed body is short and stout and fills a small part of the samara; in green ash it is longer and narrower and fills more of it (bplant.org).
• Site: white ash grows on well-drained, fertile ground; green ash is mainly a tree of floodplains, stream banks and swamps (bplant.org).

No single feature is perfect, so check at least two, and treat the leaf scar and the leaf underside as the strongest pair.

The UW–Madison emerald ash borer site names the usual look-alikes and the check that separates each one:

• Maples are opposite like ash but have simple leaves, not compound ones.
• Hickories and walnuts have compound leaves like ash but alternate branching.
• Mountain ash and prickly ash have "ash" in their names but are not true ash (Fraxinus) and are not attacked by emerald ash borer.
• Elms differ on both counts. Wikipedia describes elm leaves as alternate and simple, usually lopsided at the base, and elm seeds as round, wind-dispersed samaras, while an ash seed is a single long wing. See elm tree identification.

To tell an ash from an elm in one step, look at where the leaves join the twig: pairs directly across from each other mean ash; one leaf at a time, staggered, means elm.

White ash trees are still easy to find in many eastern forests, but the species is officially Critically Endangered. In September 2017 the IUCN placed five of the six most prominent North American ash species, white ash among them, on its Red List as Critically Endangered. The IUCN said the three dominant ash species make up nearly nine billion trees in the forests of the contiguous US, and that emerald ash borer has already killed tens of millions of trees and could destroy over eight billion.

How fast it happens: the IUCN says the beetle can kill nearly an entire forest stand of ash within six years of infestation, and NC State Extension says it typically kills an individual ash within 3 to 5 years after infestation. Wikipedia notes the beetle was identified in Michigan in 2002. Wisconsin alone has about 765 million ash trees in wooded areas and over 5 million in urban settings, according to UW–Madison.

If you find a white ash, look for the damage signs listed on our ash tree identification page and report suspected infestations to your state forestry agency.

White ash is best known as a sports and tool wood. Wikipedia describes the wood as white, quite dense (within 20% of 670 kg per cubic meter), strong and straight-grained; it is the traditional wood for baseball bats and tool handles, and since the 1950s it has been a popular choice for solid electric guitar bodies. NC State Extension adds tennis racquets, hockey sticks, oars, furniture, interior flooring and Louisville Slugger baseball bats, and notes its use as a shade and street tree.

For wildlife, NC State lists white ash as a host for eastern tiger swallowtail and mourning cloak caterpillars; birds, squirrels and small mammals eat the seeds; rabbits, porcupines and beavers eat the bark. It grows in USDA hardiness zones 3a to 9b.

A standing white ash is valued by the volume of sawlog it contains, and prices vary widely by region and log quality. The New York State Department of Environmental Conservation's Winter 2025 Stumpage Price Report (No. 106) gives these prices paid for standing white ash sawtimber, in dollars per 1,000 board feet:

• Western/Central New York (Doyle rule): average-price range $340 to $1,013, median $550; highest prices reported $496 to $1,462, median $700.
• Adirondack (International 1/4-inch rule): average-price range $250 to $675, median $350 (fewer than 20 responses).
• Delaware/Catskill (Scribner rule): average-price range $200 to $400, median $300 (fewer than 5 responses).
• Hudson/Mohawk: median $444 (fewer than 5 responses).

NYSDEC says the figures are historical, reflect the six months before printing, and are a rough guide only, not a substitute for an appraisal by a forester. It also lists white ash among the eight species that make up more than 90% of New York's log harvest. A yard tree with nails, forks or emerald ash borer damage is usually worth much less than a straight forest log; ask a consulting forester before selling.

For a confident answer from the app or from an expert, photograph:

• A twig with buds showing whether they are paired or staggered
• One whole leaf with every leaflet, then the underside
• A leaf scar close up, with the bud above it
• Bark on a mature trunk at chest height
• A seed cluster, if there is one

Photograph the tree and the app identifies it; there are free scans every day. Use the checks above to confirm the answer.

Research and drafting for this page used AI assistance. Every measurement, date, price and claim was then checked against the sources listed below, which were opened and read on 2026-09-25. Where two sources give different numbers, both are shown.