How can you treat and prevent bearded iris borers?

To treat bearded iris borers, remove and destroy infested plant parts, including the rhizomes, and apply insecticides labeled for iris borers during their active season. Preventative measures include ensuring good air circulation around the plants, practicing crop rotation, and maintaining healthy plants through proper watering and fertilization. Additionally, consider planting irises in well-drained soil and avoiding overcrowding to reduce the risk of infestation. Regularly inspect plants and remove any debris that can harbor pests.