How Do You Stop Iris from Spreading

Covering plants with a heavily weighted tarp for several years can control small patches. Tarps should extend well beyond the edges of the patch. Removal of the seed pods will prevent seed dispersal, but will not harm the plants (or prevent spread of the rhizomes).

How do I get rid of invasive iris?

1. Cut the earth around the iris leaves, digging below the rhizomes. …
2. Cut under the bottom edge of the rhizome with the shovel, severing the rhizome from the roots.
3. Lift the rhizomes gently out of the ground.
4. Fill the holes in the garden with fresh soil.

How do you stop yellow iris from spreading?

Buy native or non-invasive plants from reputable garden suppliers. See Grow Me Instead: Beautiful Non-Invasive Plants for Your Garden. Dispose of invasive plants in the garbage. Do not put them in the compost or discard them in natural areas.