This is the only hibiscus I own. I must admit, I haven't studied how to take care of it as I should. I'm guessing, because of that, it doesn't come close to its registered size for me. The tallest it has ever gotten is maybe 3 feet tall. Maybe it doesn't like our cold winters here in Wisconsin, I don't know. The winter of 2013/14 was a bad one and I thought I lost Collie Mullens. But, to my surprise it came back! It's a beautiful plant and bloom. I just need to take better care of it.