Flore Pleno is without a doubt one of the most vigorous daylilies in my garden . I think it must have crossed with a few other plants. I have several different plants and the blooms looks identical to me but they are short, medium, tall and extra tall in size. Kwanso looks very similar also and I have a few of those. I have given many of them away to my neighbor, and I am going to have to get rid of a lot more. It has always been one of my wife's favorites, and if I did not have any, I would have it on my must have want list. But, being I have so many I often don't give it the respect it deserves. Strange how being so successful in so many ways can make a plant less valued.