The Park comprises of a variety of landscapes most of them planted with horticultural specimens of shrubs and trees. In the center of the Park is a formal garden named after the prominent horticulturist J.J. Sexby. The Sexby Garden.
Peckham Rye Park is designated a Borough site of Importance for Nature Conservation (SINC). The Park has a mixture of habitats from a lake, streams to woodland, specimen trees and meadows.
The Park is the only Park in Southwark to have a stream or rivulet running through it. These features support kingfishers and rare lamprey. A project to improve the area on the western edge of the Park where the River Peck has surfaced is under development.