Hop Hornbeam

Hop hornbeam (Ostrya virginiana), also called eastern hop hornbeam and ironwood, is a small deciduous tree native to eastern North America. Its spring catkins are followed by papery, hop-shaped fruit clusters, while its ridged bark adds texture through winter. ## Size and landscape use The USDA NRCS windbreak reference lists a mature size of about 25 feet tall by 35 feet wide, slow growth, and USDA zones 3–9. Allow room for the spreading canopy and use the tree as a small shade or ornamental feature. The [Missouri Department of Conservation field guide](https://mdc.mo.gov/discover-nature/field-guide/eastern-hop-hornbeam-ironwood) describes its catkins, fruit, woodland habitat, and wildlife value; [USDA NRCS](https://nrcs.usda.gov/plantmaterials/mdpmctn7166.pdf) provides the size and hardiness reference. ## Growing conditions Hop hornbeam grows in full sun to part shade and prefers moist, well-drained soil. It also occurs on dry rocky slopes and bluffs, so it can suit naturalistic woodland edges where drainage is good. Leaves turn yellow-brown in fall before dropping. ## Maintenance This slow-growing native tree needs little routine shaping. Keep the root area free of competing weeds while young, water during establishment, and remove dead or damaged branches as needed.