Hybridized by Gerda Brooker and introduced in 2009, Victorian Garden Rolling Thunder's blooms are 6" in size and thick in substance with a velvet-like appearance. For a dark-colored flower the blooms held up very well in full sun. It is a semi-evergreen tetraploid that grows approximately 32" tall. Victorian Garden Rolling Thunder bloomed from July 6 through August 17. I really enjoyed watching it from one day to the next, just to see what colors would emerge.