American Holly is a wildlife-friendly evergreen tree with dark green, spine-tipped leaves and light gray bark. Its tiny, greenish-white flowers blooming May-June provide a nectar source for honeybees and butterflies. This tree is also a host plant for butterfly and moth larvae (caterpillars), including Henry’s Elfin (Callophrys henrici). Since it is dioecious (separate male and female plants), a male must be in the area to pollinate females for fruit production. The female trees bear bright red, berry-like fruits, which persist through the winter and provide winter food for birds. The red fruits and evergreen leaves add winter color to the yard, and cuttings make excellent holiday decorations. Use American Holly as a specimen tree or plant in groups in woodland gardens or hedges.