Sourwood (Oxydendrum arboreum) is a modest-sized yet remarkable wildlife tree, best known in New England and the Mid‐Atlantic for its exceptional value to pollinators. Its mid‐summer, lily‐of‐the‐valley–like white flowers produce abundant nectar exactly when many other woodland plants have finished blooming, drawing in honey bees, native solitary bees, bumble bees, butterflies, moths, and ruby‐throated hummingbirds. This nectar flow supports production of the famed sourwood honey, and the tree functions as a critical “bridge” food source that helps sustain pollinator populations through the summer dearth. Its wildlife role extends beyond nectar, providing structure and browse in mixed oak–heath and pine–oak forests. Songbirds use sourwood for nesting and cover, while white‐tailed deer and other herbivores selectively browse its twigs, sprouts, and foliage where it regenerates in forest understories and edges. The tree also serves as a host for multiple sphinx moth and other Lepidoptera larvae, adding caterpillar biomass that feeds insectivorous birds and bats, and older stems can develop hollows that shelter small mammals, climbing reptiles, and amphibians. In suitable acidic, well‐drained sites of southern New England, a single sourwood thus operates as a compact, four‐season wildlife resource—nectar in summer, caterpillars through the growing season, cover year‐round, and structure and shelter as it ages.