Ellen Gallagher wrote:
> >> GOOD MORNING
> >> My name is Bob Axmear and I live in Northeast Iowa(zone4). I was
> >> wondering if someone would be kind enough to explain what you do about
> >> iris borer. I do what the book say and clean up the old foliage in the
> >> fall and this spring I sprinkled granulated diazanon around the plants
> >> and I noticed I still have some infestation although not as much as
> >> usual.
> >> Thanks
> >> Bob
> Are you sure it is the 'borer'? Before you go spraying Cygon 2E
> and zapping the environment in the process, make sure it is the
> borer. We don't have the borer here and I don't know why we don't
> after reading about other Northern gardens. Not all gardens have
> the borer and if mine ever shows signs of it, I will plant garlic
> and onion in the iris beds for a couple of years not spraying
> Cygon 2E which 'may' compromise the plants and the soil.
> If that fails, I will try something else - folks have been growing
> bearded and Siberian irises around here for well over a hundred years
> and no one I have talked to has ever reported saying the effects of
> the 'borer'.
> Dunno. Err on the side of caution....
> Ellen Gallagher email@example.com
I pull these huge grubs out of them when I dig them up. I would say it
is a borer.