The Polly Hill Arboretum is a public garden. The grounds are open to visitors daily, sunrise to sunset, year-round. A staffed Visitor Center with garden info, merchandise and plant sales is open Memorial Day weekend through Columbus Day weekend, 9:30 a.m. - 4:00 p.m. Tours are available daily at 10:00 a.m. in July and August, and by advanced reservation otherwise. Tours are free with $5 admission. The Polly Hill Arboretum, a Martha’s Vineyard landmark, was developed by the legendary horticulturist, Polly Hill (1907-2007). Polly began her collection of unique plants in 1958. Established in 1998 as a not-for-profit institution the Arboretum is devoted to the cultivation and study of plants and the preservation of the character and magic of this tranquil landscape. There are 25 acres of cultivated landscape open to visitors and the remaining 47 are preserved woodlands. In 2015 the Polly Hill Arboretum was designated as a Historic District by the National Register of Historic Places. Rare trees and shrubs from around the world are set among stone walls, meadows, and fields, including Polly’s famous North Tisbury azaleas, the national stewartia collection, camellias, hollies, rhododendrons, crabapples, conifers, magnolias, and many more. The kousa dogwood allee, perennial border, monkey puzzle tree, and the Julian Hill magnolia are favorites with visitors.