The Yaddo Garden Association, founded in 1991, is dedicated to the restoration and preservation of the gardens at Yaddo. The gardens consist of both a rose garden and a rock garden. Volunteers of the Yaddo Garden Association do all phases of garden work. The Yaddo Gardens are open to the public seven days a week, from 8 a.m. to dusk.
The gardens feature a variety of plants which peak throughout the season. The roses begin to bloom mid-June and are at peak from about the third week of June through July and then peak again mid to late August. The rock garden is in bloom mid-June through mid-September. The remainder of the estate is private and may be visited only on special occasions.