All of them can get to about 4 feet wide if left to grow, but you can prune them back to about 6-8" early in the spring to keep them in check. They will grow right back. You can also shear them after they flower and they may rebloom. The goldflame has the yellow leaves, the neon flash and AW have green leaves with red flowers - I like the look of the neon flash better. The flowers are more vivid.

Thanks, Nurseryman, I really appreciate that you responded to my query.

Right now, the Neon Flash is about 30" wide in one direction and about 24" wide in another direction. I can see it had been pruned. It's about 24" high as well. I would love for it to get 4' tall, the better to shade the sun-sensitive plants I mentioned, but I may have to prune it so that it doesn't actually touch and smush the nearby heuchera. It certainly is a beautiful shrub, and I really look forward to seeing the bright deep pink flowers in the spring.

Right now, it has pink flower clusters all over that are about 1" in diameter. How big are the spring/summer clusters? I understand that they are bigger.

Thanks!!!