There are a couple that I can grow outdoors here in zone 9b as long as we don't have any lengthy freezes and I know they grow outside year round in South Florida, Hawaii, Australia etc. but folks in many areas have to grow them as indoor house plants.
I did a search for Hoya on the Tropicals Forum it came back with 18 hits:
http://garden.org/forums/searc... and on the Florida Gardening Forum it came back with 10 matches:
http://garden.org/forums/searc... so I guess they are sometimes discussed on those forums as well.
Maybe that shows that a Hoya Forum would indeed be active.
