American Hibiscus Society
The Australian Hibiscus Society
International Hibiscus Society
Richard Johnson's Hibiscus of Tahiti
Wally Morgan's "The World of Hibiscus"
Tropical Hibiscus "Queen of the Tropics"
Official  International Hibiscus rosa- sinensis cultivar register
International Hibiscus Society registared cultivars
American Hibiscus Society Chapter Events
Hibiscus Rosa- Sinensis in Sweden
Waimea  Arboretum  & Botanical Gardens  Hawaii
Hidden Valley Hibiscus
Hibiscus Bugs
Hibiskus Wunder