PBR (Plant Breeders Rights)

In short, this means the plant is licensed to the original breeder of a cultivar. When the plant is sold, a royalty is paid back to the plant breeder, much like that of a singer when their song is played on the radio. This explains why some varieties seem so much more expensive than others. You are entitled to divide and replant a PBR plant that you have in your garden, but you are prohibited from selling and profiting from those divisions.