Hi microb, Wow, those are really beautiful Epi's you have there!
We, as members can't add or create new forums, that's something that only the site administrator can do. We are allowed to start new threads on an already existing forum but for actually creating new forums, that's only possible by administration. If members respond with enough interest about wanting a specific forum for Epiphyllum, administration will create the forum.
You can't change the title of this thread but maybe you can have admin change the subject/title to read: "Is anyone else interested in a Forum for Epiphyllum (Orchid Cactus)? That way it will catch member attention and we'd see how many folks would be interested in a new orchid cactus forum! I don't grow Epi's anymore but I'd have interest in reading and learning more about them and of course seeing everyone's photos so I'll be watching to see what interest there is in a specific forum for those lovely plants!
In the past, threads on Epiphyllum have appeared in both the Cactus & Succulent Forum and the Tropicals Forum so for the time being you could start new threads in either place to share your lovely photos!
http://garden.org/forums/view/...
http://garden.org/forums/view/...