Bur Oak vs Green Ash - TreeTime.ca

Bur Oak vs Green Ash

Quercus macrocarpa

Fraxinus pennsylvanica

NOT AVAILABLE THIS SEASON

(new stock expected: fall of 2026)

Bur Oak
Green Ash

Bur Oak has a wide distribution but is one of the only oaks that will grow well on the prairies. Bur Oak produces deeply lobed, dark green leaves that turn golden yellow to brown in the fall.

Its acorns are round and half enclosed by a mossy fringed cup.

Although slower growing, this long lived tree eventually becomes a popular large ornamental tree for driveways, parks, and the front of industrial buildings. Popular as a memorial or dedication tree.

Note: Most Oak species can be considered toxic for many animals.

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.

Bur Oak Quick Facts

Green Ash Quick Facts

Lowest Price: $3.99 - SAVE UP TO 20%
Zone: 2b
Zone: 2b
Height: 20 m (66 ft)
Height: 18 m (60 ft)
Spread: 8 m (28 ft)
Spread: 12 m (40 ft)
Moisture: dry, normal
Moisture: dry, normal
Light: full sun
Light: full sun
Hybrid: no
Hybrid: no
Catkins: yes
Catkins: no
Fall colour: yellow to golden brown
Fall colour: bright yellow in early fall
Nuts: small acorns
Growth rate: slow
Growth rate: fast
Life span: long
Life span: long
Suckering: low
Suckering: low


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


Other Names: blue oak, burr oak, mossycup oak, scrub oak
Other Names: downy ash, red ash, swamp ash, water ash