Re: CULT: Borers in Louisianas, etc.
- To: Multiple recipients of list <i*@rt66.com>
- Subject: Re: CULT: Borers in Louisianas, etc.
- From: "* a* C* W* <c*@cache.net>
- Date: Mon, 26 May 1997 12:03:07 -0600 (MDT)
Bill Shear writes (26 May 97):
> For the second time in three years, borers are infesting my Louisiana
> Irises.
> Recieved wisdom is that the borer does not occur south of about
Washington,
> DC. We are considerably south of there. Does anyone else have any
reports
> of possibly anomalous borer occurences?
> I still do not know if the
> iris borer is native only the northeastern part of North America, or is
> found wherever irises grow. >
> Anyone out there have any more detailed information on the iris borer?
Is
> it a European import, like many of our pestiferous insects?
Currier McEwen has this to say about borers in his book "The Japanese
Iris":
"The pest is the larva of the brownish moth Macronuta onusta. It is the
pricipal cause of damage to irises in the eastern and midwestern US, but
has been much less of a problem in the South and west of the Rocky
Mountains, and apparently has not been found in England or on the
Continent. A borer mentioned as a pest in Japan may be different from the
one in the US (because the Japanese borer has up to three (!) generations
per year while the US kind has only one)."
Iris borers are totally unknown in this area, at least.
Jeff Walters in northern Utah (USDA Zone 4, Sunset Zone 2)
cwalters@cache.net
