The Cora Hartshorn Arboretum and Bird Sanctuary is a non-profit organization which serves as a cultural and educational center for the residents of greater Millburn Township, NJ. The Cora Hartshorn Arboretum encompasses 16.5 acres in Millburn Township. Arboretum trails pass kettle moraines, hilly slopes and even a natural amphitheater created by the glaciers. The Arboretum today boasts one of the state's greatest concentrations of wildflowers, over 150 species, and is home to 45 species of trees, 100 species of birds, rare ferns, and 275-year-old tulip trees. We continue to share and build upon Miss Cora's vision as a special place where children and adults may come to observe and study a native woodland habitat.