Skip to main content

Omaha tree guide

American elm (species only)

Ulmus americana

American elm is native to Nebraska, historically dominated community streets, and resistant varieties can be planted throughout the state.

Sources checked: 2026-08-02Next source review: 2027-02-02Independent professional review: not completed

What this page can tell you

How to recognize this kind of tree

This profile can compare American elm species traits but cannot determine whether a tree is a named Dutch-elm-disease-resistant cultivar.

These species-level facts cannot diagnose the condition of one particular tree, prove that work is needed, or determine whether it is hazardous.

What to look for

  • The classic mature form is tall and arching or vase-shaped; leaves are alternate and toothed, and green wafer-like seeds follow flowers.
  • Nebraska Forest Service lists a typical mature height and spread of 50–80 feet.

What changes by season

Use whatever features are available now. Missing leaves, flowers, fruit, or pods often just means the timing is wrong—not that the tree cannot be a match.

When leaves are on

Compare alternate leaves or buds staggered along the twig, one leaf blade per stem, toothed, elm-like leaves, and oval leaves with toothed edges. Use more than one feature and do not force a match from leaf shape alone.

When leaves are off or hard to see

Compare deep furrows, gray furrows or ridges, and a vase-shaped or arching tree. Bark and overall shape can help narrow it down, but neither confirms the species by itself.

When fruit or seeds are present

round wafer-like winged seeds can provide another useful clue. Not seeing them may simply reflect season, age, sex, or variety.

Typical mature size

Nebraska Forest Service lists a typical mature height and spread of 50–80 feet.

Similar Omaha trees

These are the closest lookalikes among the 10 common local trees in this guide. Other species can still look similar.

Bur oak

Quercus macrocarpa

These trees can look similar in how the leaves or buds attach, whether the leaf is simple or compound, and bark. Check leaf shape, fruit or seeds, and overall tree shape next instead of relying on the name or one photograph.

View that tree profile

Callery pear (including ‘Bradford’)

Pyrus calleryana

These trees can look similar in how the leaves or buds attach, whether the leaf is simple or compound, and leaf shape. Check bark, fruit or seeds, and overall tree shape next instead of relying on the name or one photograph.

View that tree profile

Important Omaha-area context

Named resistant American elm selections exist, but resistance is a cultivar claim that this visual comparison cannot establish.

This does not prove that a particular tree is infested, diseased, structurally unsound, or in need of removal.

What to consider for an individual tree

Suspicious canopy decline needs confirmation and must not be attributed to Dutch elm disease from this profile alone.

When planting, compare named selections from current regional guidance; for an existing tree, seek confirmation before disease or treatment decisions.

Sources