Iris Borers - AAARGH !!
Moving some irises this weekend to make room for a new fence, I found more than a few ravaged by IRIS BORERS!! This is the first time I've found these on (in?) my irises.
I cleaned all the rhizomes I thought were salvageable, destroyed very grub I found and trashed all the leaves/bad rhizomes (instead of composting).
Why now? Is there something I can do to prevent these things? I've been so upset about this--my irises have been my hardy, low-care plants for years and now this!!! What did I do wrong? Where did these things come from? I've never had a problem before--was I just lucky?