I'm on a Yahoo Group. Go to the Colorado Dahlia Society web page for tons of information, including forums. I also think some of the individual societies around the world have their own chat groups.

If you can get to a dahlia meeting you will learn all you need to know, at least a lot of information.

You might also look at Dave's Garden, although I think you have to pay to post messages.

Ginny

Here is a link that might be useful: Colorado Dahlia Society