I had a mix of both the common purple and white (albus), and the rhizomes got completely mixed up before planting. There could be just white, just purple or a mix but it is hard to know until they flower. If you are not fussed and willing to take the risk they are quite attractive when both are present, however if you desire a specific colour please feel free to inquire as I may know as the season progresses. I do also have a couple larger containers availible for £20.