Rock Star is unexpectedly tall, closer to 5 and a half foot. Most dahlias are a bit taller in my yard due to only 6-7 hours of sun, but that one is in one of the sunnier beds. Nettie is the shortest of the plants pictured, at about 3 ft.
Except for the Fire Magic, all of these are new for me this year, so its extra exciting to see them bloom!