Thanks,Sue..Unfortunately the vendor is why I'm looking here..They've stopped selling dahlia tubers in favor of holiday nursery products(waahhh! ;)) ..They seem to be the only supplier(so far)..
Name: Suzanne/Sue Sebastopol, CA (Zone 9a) Sunset Zone 15
Maybe try posting in the Dahlia forum https://garden.org/forums/view...
This thread only notifies Joy, the one who added the photo, of your post and anyone who may happen to follow the Plant Photo forum.