Societies:
Danish Hoya Society
http://www.danskhoya.dk/dhf.htm
Swedish Hoya Society
http://www.swedishhoyasociety.com/
International Asclepiad Society
http://www.asclepiad-international.org
Dealers:
Green: Plant Research at: http://www.rare-hoyas.com
Kartuz Greenhouses, Sunset Island Exotics at:
http://www.kartuz.com
Cactus and Succulent Plant Mall
http://www.cactus-mall.com
Bob Smoley's GardenWorld at:
www.bobsmoleys.com
Aloha Hoyas at:
www.bigislandgrowers.com
Literature:
Chuck Everson, Bookseller at rbgdns@aol.com
