Hello Gardeners, I’m Amanda McNulty with Clemson Extension and Making It Grow . Exotic iris are stars in many spring gardens with bearded iris being the most popular -- with those fancy modified sepals called falls festooned with fuzzy structures looking for all the world like caterpillars. They’re spectacularly easy to grow – if you know one trick – don’t plant the rhizome deeply – half of it should be above ground. A rhizome is a specialized stem that grows horizontally and serves as a storage