Hophornbeam, American (Ironwood)

American Hophornbeam (Ostrya virginiana)

American hophornbeam brings a small-tree canopy to a dry woodland edge, with shaggy bark and papery seed clusters that resemble hops. Its slow growth and shade tolerance make it useful beneath larger hardwoods or along a naturalistic path.

Seeds and a Woodland Food Web

Songbirds, wild turkeys, quail, and small mammals eat the nutlets. Leaves may also feed eastern tiger swallowtail and red-spotted purple caterpillars. Leave a connected understory and some fallen leaves where practical, so shelter and seasonal food remain together.

Hop-Like Fruits and Ironwood Character

The hop-like clusters are papery coverings around small nutlets. They give the crown a different texture in late summer, followed by yellow fall foliage and peeling bark through winter. The Ironwood name reflects the dense, hard wood; this is a different tree from smooth-barked American hornbeam.

A Place on the Drier Woodland Edge

Use it in well-drained loam, rocky ground, or a sloping woodland planting. Established trees tolerate dry conditions, but newly planted roots still need water. Protect the root zone from repeated traffic and compaction, and allow the slow-growing crown time to develop.

Product Details

• Sun: Part shade to shade; also tolerates sun.
• Soil: Well-drained, medium to medium-dry soil.
• Mature height: Usually about 20–40 feet; occasionally taller.
• Bloom: Spring catkins; wind-pollinated.
• Hardiness: USDA zones 3–9.
• Fruit or seed: Nutlets in papery, hop-like clusters; wildlife food.