Lady Neva - is in her 8th season in my garden and I've noticed that the scapes have gotten taller than 42 inches over the years. More like 50 inches if they were standing straight up. But as they got taller, the scapes didn't want to hold up the blooms so I put a small piece of fencing at the base of the plant. I do love LN though!
2013 picture.
Apple Tart - is a nice red and has been in my garden 9 years. I would definitely recommend it. If you look in the database, you can see that it throws a few polys every now and then. It seems to be more fade resistant than some of my other reds.
2013 picture.
Smoky Mountain Autumn - 6 years in my garden and has not grown much. I would have liked to have a bigger clump by now, but it could be my soil conditions. But I love the color, so it will stay in my garden for a good long time!
2014 picture.
Also, Lady Neva and Apple Tart start blooming later than others in my zone 6b garden, which means they don't get started until at least the first week of July.