Ironwood (Ostrya virginiana)
As this small, graceful tree ages, it becomes more rounded in habit. A worthy native tree, it is recommended for a naturalistic garden. The flowers are not ornamentally significant. The fruits, nutlets that mature in fall, resemble the fruit of hops. This small tree has finely shredded, attractive bark and one of the hardest of all woods. Hop hornbeam is a native tree of rich woodlands. Related to birches but without the insect and disease problems, this tree is best known for hoplike papery seedpods that dangle from its branches in early autumn.
Illinois native species.
Street: Appropriate for restricted size planting sites; recommended by the City of Chicago Urban Tree Planting List
Park/Residential: Appropriate for landscaped planting sites including public parks, residential property, golf courses, cemeteries, etc.
Legacy: For plantings with an expected life span of more than 60 years; retained 50 percent or more climate suitability in models for the decade 2080
N/R +35 yrs: Not recommended for plantings with an expected life span of more than 35 years