I was at Alaska Mill and Feed and looked over their dahlias. Have several I would like to have but I am being strong. I only bought the lily "Lollypop." It isn't all that eye popping but my memory is that it multiplies like mad. I dug it up several years ago and gave most away and then lost what I had left. In the next week or so I will give in and haul up the trove from the crawlspace.
