If you want to keep the blooming stalks "clean", generally, you can pluck off each individual flower after it has bloomed without hurting the remaining flowers still waiting to bloom. Cut off the complete flower stalks almost to the ground in June after the first flush of flowers fade, but don't remove the foliage. Come early fall, your plants should send up new flower stalks until frost. These flower stalks also can be removed right after flowering is done. 

In climates with cold winters, you may see limited fall blooming. Successful reblooming also depends on the variety because some varieties are better than others.  Reblooming Bearded Iris are heavy feeders, requiring more water and fertilizer for the extra boost to flower again. Use a low nitrogen fertilizer (6-10-10, bulb fertilizer, or bone meal). Be sure to deadhead faded flower spikes promptly after the first bloom, so plants will have time to form new flowers.
 
As for using an insecticide, it's generally safe to use a friendly insecticide on the blooms and stems of bearded irises. However, it's crucial to follow the label instructions carefully and ensure that the product is safe for use on ornamental plants. If you're concerned about the effects on the plant, it's always a good idea to test a small area first and observe the plant's reaction before applying it more widely.

I hope your  iris provide another flush of blooms in the fall.  

If you want to keep the blooming stalks "clean", generally, you can pluck off each individual flower after it has bloomed without hurting the remaining flowers still waiting to bloom. Cut off the complete flower stalks almost to the ground in June after the first flush of flowers fade, but don't remove the foliage. Come early fall, your plants should send up new flower stalks until frost. These flower stalks also can be removed right after flowering is done. 

In climates with cold winters, you may see limited fall blooming. Successful reblooming also depends on the variety because some varieties are better than others.  Reblooming Bearded Iris are heavy feeders, requiring more water and fertilizer for the extra boost to flower again. Use a low nitrogen fertilizer (6-10-10, bulb fertilizer, or bone meal). Be sure to deadhead faded flower spikes promptly after the first bloom, so plants will have time to form new flowers.
 
As for using an insecticide, it's generally safe to use a friendly insecticide on the blooms and stems of bearded irises. However, it's crucial to follow the label instructions carefully and ensure that the product is safe for use on ornamental plants. If you're concerned about the effects on the plant, it's always a good idea to test a small area first and observe the plant's reaction before applying it more widely.

I hope your  iris provide another flush of blooms in the fall.  

Thank you so much  
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