Wow, never seen such total devastation an iris borer does. I have never had an iris borer here that I know of. I had one iris in an isolated area that had a couple V notch cuts on its leaves this spring so I dug it up a couple weeks later and checked it out. Never found anything in or on it. The iris is still growing well. Good info to know in case anyone ever has a problem, and the pros and cons of using chemical control.
