Lots of plants only bloom once a year, Calin. But if you choose your varieties carefully, making sure that you have earlys, mids and lates, you can extend your Iris bloom season to about two months in the Spring. And if you add some re-bloomers, then you get a second go-round in the Fall. Now you're up to three months of bloom-time! That's not too bad!! :thumbsup:
I don't know if Irises have the most color mixes of all flowers, but I know that there are enough color mixes to keep me intrigued and purchasing for years to come!