Green Ash vs American Elm - TreeTime.ca

Green Ash vs American Elm

Ulmus americana

Fraxinus pennsylvanica

American Elm
Green Ash

American Elm is fast growing, tall tree with a recognizable and pleasing shape.

It's well suited for urban environments because of its non-invasive roots and ability to grow on harsh sites (quite salt tolerant). American Elm develops a wide, dense canopy that provides shade for many city streets around North America.

Green ash is a fast growing tree with incredible golden yellow leaves in fall. This tree is native to the prairies and is well suited for drought and cold. Green ash can also tolerate soil compaction, periods of flooding and a wide variety of soils including alkaline. This makes green ash ideally suited for use in urban environments.

American Elm Quick Facts

Green Ash Quick Facts

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Zone: 2a
Zone: 2b
Height: 30 m (98 ft)
Height: 18 m (60 ft)
Spread: 15 m (50 ft)
Spread: 12 m (40 ft)
Moisture: any
Moisture: dry, normal
Light: partial shade, full sun
Light: full sun
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no
Fall colour: bright yellow
Fall colour: bright yellow in early fall
Growth rate: fast
Growth rate: fast
Life span: very long
Life span: long
Suckering: medium
Suckering: low


In row spacing: 1.8 - 2.4 m (6 - 8 ft)
Between row spacing: 5 m (16 ft)


Other Names: water elm, whilte elm
Other Names: downy ash, red ash, swamp ash, water ash