Not sure this is an iris borer problem, but an iris scape has suddenly turned mushy (and smelly). I've dug out as much of it as I could and put it in the garbage, but should I destroy the whole plant? Is this the damage that iris borers do? Yuk!
I think that if ever a mortal heard the voice of God it would be in a garden at the cool of the day. ~F. Frankfort Moore, A Garden of Peace