Linwood Gardens - Private garden in New York featuring a significant collection of tree peonies. Information about the open days, and photos of the tree peonies of Japanese and American origin. Yahoo Groups: Peony - International interest group for discussions and sharing photos and reference information. Includes list of peony resource links. Must join group (free) to access information. Yahoo Groups: PeonyPlus - Members share messages, files and photos, and trade plants. The Website From Peony Friends For Peony Friends - Collection of articles and reference information on garden peonies - from history to hybridizing techniques. Peony Garden - Australian growers of primarily tree peonies present background information on plants and breeding, photos of their hybrids, and links to articles. Carsten Burkhardt's Web Project Paeonia - Exhaustive account of both species and cultivars. Peonies for the Home Landscape - North Carolina Cooperative Extension - Cultivation resource including variety selection, planting requirement, maintenance, and advise for common problems.