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Green Ash

Researched by Cassandra Nowak
 Species: Fraxinus pennsylvanica
Common name:  Green Ash
Family:  Oleaceae (Olive Family)
Clade:  Angiosperms (flowering seed plants)

Coordinates:  39.7094371, -75.11745702

Tree Tag: 881 An icon used to show more information.
A tag using this number is placed near the tree.

 

Historically common across the United States, green ash trees thrive in soils with good moisture and are neutral to alkaline conditions. They grow relatively fast, gaining about two feet in height in the typical growing season, and can reach full height in as little as 25 years. Maximum heights for this species range from 50 to 70 feet. With such a fast growth rate, green ash should make an excellent landscaping tree, but this species is greatly susceptible to insect pests. The most common threats to green ash are emerald ash borers and ash bark beetles, both of which have contributed to massive declines in green ash tree populations.

Green ash foliage is dark green in the spring and summer. The leaves are pinnately compound, which means they have multiple leaflets. Green ash leaves have an odd number of lanceolate-shaped leaflets (usually seven), with one leaflet located at the end of the leaf’s central stem and the other six paired on either side. Read More


 
Green Ash Leaf Illustration
An image of the green ash tree in the Rowan University Arboretum, Glassboro New Jersey.
An image of the green ash tree bark in the Rowan University Arboretum, Glassboro New Jersey.
An image of the green ash tree leaves in the Rowan University Arboretum, Glassboro New Jersey.
An image of the green ash tree branches in the Rowan University Arboretum, Glassboro New Jersey.
An image of the green ash tree branches in the Rowan University Arboretum, Glassboro New Jersey.
An image of the green ash tree leaves in the Rowan University Arboretum, Glassboro New Jersey.
An image of the green ash tree leaves in the Rowan University Arboretum, Glassboro New Jersey.
An image of the green ash tree leaves and branches in the Rowan University Arboretum, Glassboro New Jersey.
An image of the green ash tree leaves in the Rowan University Arboretum, Glassboro New Jersey.
An image of the green ash tree leaves in the Rowan University Arboretum, Glassboro New Jersey.
An image of the green ash tree bark in the Rowan University Arboretum, Glassboro New Jersey.
An image of the green ash tree leaves in the Rowan University Arboretum, Glassboro New Jersey.
An image of the green ash tree trunk in the Rowan University Arboretum, Glassboro New Jersey.

[Show slideshow]
Campus Species Map
Researcher’s Biography

 

Cassandra Nowak

Cassandra Nowak earned her degree in Biological Sciences in 2023. 

Suggested Citation:

Novak, Cassandra. (2022, Dec). Green Ash. Rowan University Arboretum. https://arboretum.rowan.edu/trees/green-ash/

Questions to Explore

    • Why are so many green ash trees dying, and how might this negatively affect ecosystems?
    •  How do you identify a Green Ash tree infested by emerald ash borer?

    References

    Herms, D. A., & McCullough, D. G. (2014). Emerald ash borer invasion of North America: History, biology, ecology, impacts, and management | Link

    Kappler, R. H., Knight, K. S., Bienemann, R. L., & Root, K. V. (2018). A Population Viability Analysis of Green Ash Trees with Emerald Ash Border Impacts. The Ohio Journal of Science, 118(1) Retrieved from | Link

    Klooster, W. S., Herms, D. A., Knight, K. S., Herms, C. P., McCullough, D. G., Smith, A., Cardina, J. (2014). Ash (fraxinus spp.) mortality, regeneration, and seed bank dynamics in mixed hardwood forests following invasion by emerald ash borer (agrilus planipennis). Biological Invasions, 16(4), 859-873. | Link

    Nguyen, N. T., Symmank, M., & Keim, R. F. (2022). Drought responses in floodplain forests obtained by remotely sensed and tree-ring data. Ecohydrology, 15(5) doi: | Link

    Wilson, A. D., Forse, L. B., Babst, B. A., & Bataineh, M. M. (2019). Detection of Emerald Ash Borer Infestations in Living Green Ash by Noninvasive Electronic-Nose Analysis of Wood Volatiles. Biosensors, 9(4), 123. | Link

     

     

    Rowan University Resources

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    On The Cover- Green Ash | Link

    Localization and Quantification of Total UV Absorbing Compounds in Green Ash | Link

    Detection of Emerald Ash Borer Infestations in Living Green Ash by Noninvasive Electronic-Nose Analysis of Wood Volatiles | Link

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