IronwoodOstrya virginiana Ironwood, a gracefully slow growing medium sized tree, boasts slender spreading branches that lend it an elegant silhouette. Adding a touch of intrigue, the tree features hop like fruits that emerge in late summer, contributing to its visual appeal. As the seasons unfold, Ironwood's leaves persist into winter, ensuring a lasting and year round presence. Ironwood gets its name from its very hard wood. Mature Size: 30' x 20' Zone: 3