This is Phrag. Eric Young 'Rocket Fire' 4N x Rosy Charm 4N. The 4N stands for "tetraploid" which means that each cell in the plant has four sets of chromosomes. Normally plants have 2N, or two sets of chromosomes (diploid). By doubling the number of chromosomes, there is more genetic material to work with which means that there is more potential for dramatic coloring and better form. These crosses are superior to diploid crosses in general. I bought this plant yesterday at my society meeting.
