Dahlias: Question about "Trial Gardens" :), 1 by TuttiFrutti

TuttiFrutti wrote:
I'm new to this Forum, but thoroughly enjoyed visiting a trial garden yesterday that was set up by the American Dahlia Society. While I searched around for the names of the different cultivars, all I found were numbered tags and no key to the codes.

Are trial gardens generally comprised of new hybrids still under evaluation, or might they also include commercially available cultivars? I'd love to find out what this one is, for example.

Thanks in advance,
Donna