How to Divide Iris

purple, lavender, and white irises blooming in a garden
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How to Divide Iris

How to Divide Iris

If you've never divided your bearded irises before, don't worry, it's simple enough to do. They should be divided every 2 to 3 years, preferably in late summer. 

Thankfully, bearded irises are very easy to dig up, as their rhizomes sit right at soil level.

  • Carefully dig them up, keeping as many roots as possible, and rinse them off.
  • Once they're relatively free of dirt, check the rhizomes carefully for soft areas or small holes. If you see anything like this, carefully remove these spots with a sharp knife.
  • Then you can divide the remaining rhizomes at their natural joints.
  • Lastly, trim the foliage back to about 6 inches, and re-plant the new rhizomes.

It's truly as simple as that! You'll soon be enjoying even more of your favorite irises, and if you're looking for a great companion plant, try mixing them with daylilies. They both appreciate sunshine and good drainage, and bloom successively, with the Daylilies often encoring to keep the Irises company!