Tree Purdue Plant Doctor Available Fraxinus sp. [Ash] Fraxinus (Ash) is a genus of about 65 species of deciduous trees native to the northern hemisphere, including North America, Europe, and Asia. Until recently, plants of this genus had been very popular for use in the landscape, and commercially, as timber trees, given their very hard wood. Unfortunately, this genus is now being severely affected the Emerald Ash Borer (EAB). Damage can be prevented with the appropriate pesticide, but the treatment cost will eventually… Purdue Plant Doctor Available
Tree Audio Recording AvailablePurdue Plant Doctor Available Ginkgo biloba [Ginkgo] The Ginkgo is a long-lived deciduous conifer and gymnosperm. It is frequently termed a "living fossil," as it is the only surviving member of a group of ancient plants with fossils dating back to 270 million years ago. This plant is dioecious, and the so-called fruits (which are actually naked seeds with a soft seed coat) are borne on female trees, are green or tan-orange, and have an offensive odor when ripe and decaying. Fruits… Audio Recording AvailablePurdue Plant Doctor Available
Tree Audio Recording AvailablePurdue Plant Doctor Available Ginkgo biloba 'Autumn Gold' [Autumn Gold Ginkgo] The Ginkgo is a long-lived deciduous conifer and gymnosperm. It is frequently termed a "living fossil," as it is the only surviving member of a group of ancient plants with fossils dating back to 270 million years ago. 'Autumn Gold' is an all male, and therefore, fruitless cultivar that has outstanding golden yellow foliage in the fall. Picturesque, open branches. Audio Recording AvailablePurdue Plant Doctor Available
Tree Purdue Plant Doctor Available Ginkgo biloba 'Goldspire' [sold as Ginkgo Goldspire™] [Goldspire Ginkgo] Non-fruiting cultivar of Ginkgo, often thought of as highly ornamental. Purdue Plant Doctor Available
Tree Audio Recording AvailablePurdue Plant Doctor Available Ginkgo biloba 'Magyar' [Magyar Ginkgo] The Ginkgo is a long-lived deciduous conifer and gymnosperm. It is frequently termed a "living fossil," as it is the only surviving member of a group of ancient plants with fossils dating back to 270 million years ago. 'Magyar' is an all male, and therefore, fruitless cultivar that has a narrow, strongly upright habit. Audio Recording AvailablePurdue Plant Doctor Available
Tree Audio Recording AvailablePurdue Plant Doctor Available Ginkgo biloba 'PNI 2720' [sold as Princeton Sentry®] [Princeton Sentry Ginkgo] The Ginkgo is a long-lived deciduous conifer and gymnosperm. It is frequently termed a "living fossil," as it is the only surviving member of a group of ancient plants with fossils dating back to 270 million years ago. The Princeton Sentry Ginkgo is an all male, and therefore, fruitless cultivar that has a nearly colomnuar, narrow, upright habit. Audio Recording AvailablePurdue Plant Doctor Available
Tree Indiana Native Audio Recording AvailablePurdue Plant Doctor Available Gleditsia triacanthos f. inermis [Thornless Common Honeylocust] This large tree has finely compound leaves that provide a pleasant, dappled shade in the summer. The thornless forma inermis is only sold in commerce, as the profuse thorns of the species type can be a liability. Mimosa webworm and locust mite are serious pests in the Midwest, and are becoming more serious (especially in areas tending toward monoculture). Can be controlled with spraying. Indiana NativeAudio Recording AvailablePurdue Plant Doctor Available
Tree Purdue Plant Doctor Available Gleditsia triacanthos f. inermis 'Impcole' [sold as Imperial®] [Imperial Thornless Honeylocust] This rounded, compact, and low-fruiting cultivar has finely compound leaves that provide a pleasant, dappled shade in the summer. The thornless forma inermis is only sold in commerce, as the profuse thorns of the species type can be a liability. Mimosa webworm and locust mite are serious pests in the Midwest, and are becoming more serious (especially in areas tending toward monoculture). Can be controlled with spraying. Purdue Plant Doctor Available
Tree Audio Recording AvailablePurdue Plant Doctor Available Gleditsia triacanthos f. inermis 'Skycole' [sold as Skyline®] [Skyline Thornless Honeylocust] The Skyline Thornless Honeylocust is a nearly fruitless compact, pyramidal tree with a strongly upright habit and finely compound leaves that provide a pleasant, dappled shade in the summer. The thornless forma inermis is only sold in commerce, as the profuse thorns of the species type can be a liability. Mimosa webworm and locust mite are serious pests in the Midwest, and are becoming more serious (especially in areas tending toward monoculture). Can be controlled… Audio Recording AvailablePurdue Plant Doctor Available
Tree Audio Recording AvailablePurdue Plant Doctor Available Gleditsia triacanthos f. inermis [sold as Shademaster®] [Shademaster Thornless Honeylocust] The Shademaster Thornless Honeylocust is a popular cultivar that is nearly fruitless and has dark green, finely compound leaves on ascending branches that provide a pleasant, dappled shade in the summer. The thornless forma inermis is only sold in commerce, as the profuse thorns of the species type can be a liability. Mimosa webworm and locust mite are serious pests in the Midwest, and are becoming more serious (especially in areas tending toward monoculture). Can… Audio Recording AvailablePurdue Plant Doctor Available
Indiana Native
![Ginkgo biloba 'Goldspire' [sold as Ginkgo Goldspire™]](https://www.arboretum.purdue.edu/explorer/wp-content/uploads/sites/2/2023/12/NAME_22479-summer-habit-1-150x150.jpg)
![Ginkgo biloba 'PNI 2720' [sold as Princeton Sentry®]](https://www.arboretum.purdue.edu/explorer/wp-content/uploads/sites/2/2023/01/NAME-262-6-150x150.jpg)
![Gleditsia triacanthos f. inermis 'Impcole' [sold as Imperial®]](https://www.arboretum.purdue.edu/explorer/wp-content/uploads/sites/2/2023/01/NAME-21412-6-150x150.jpg)
![Gleditsia triacanthos f. inermis 'Skycole' [sold as Skyline®]](https://www.arboretum.purdue.edu/explorer/wp-content/uploads/sites/2/2023/01/NAME-264-7-150x150.jpg)
![Gleditsia triacanthos f. inermis [sold as Shademaster®]](https://www.arboretum.purdue.edu/explorer/wp-content/uploads/sites/2/2023/01/NAME-263-150x150.jpg)