The late horticulturist and part-time Vineyard resident Polly Hill tended some 2,000 species of plants and developed nearly 100 species herself on her old sheep farm in West Tisbury. On-site are azaleas, tree peonies, dogwoods, hollies, lilacs, magnolias, and more. Hill raised them from seeds without the use of a greenhouse, and her patience is the inspiration of the arboretum. Run as a nonprofit center, the arboretum also runs guided tours, a lecture series, and a visitor
center and gift shop.