With more than 250 species, irises grow from rhizomes rather than seeds, tubers, or bulbs. Rhizomes extend horizontally under ...

Using a shovel or spade, carefully remove the iris from the ground. Try to lift the entire clump of rhizomes or bulbs (depending on the variety) from the ground at once. Shake or rinse off excess ...

Fortunately it's easy to revive them. Irises spread by underground rhizomes, a storage organ similar to a bulb. Plants can be split apart and replanted in the autumn or spring. It should be done ...

Understanding their anatomy and growth cycle helps ensure they thrive. Irises have rhizomes that store nutrients and roots ...

To divide an overgrown clump of irises, plunge a fork into the ground, aiming away from the rhizomes to avoid damaging them. Lift the clump from the ground. This is easy to do since the roots grow ...