Re: Re: CULT: ORGANIC SOLUTIONS/cygon/Iris Borer Deterrent

There was a lot of discussion about the Iris Borer Deterrent by Garden
Shield at the spring AIS Board and general meetings. 

I was told by Jay Hudson (AIS Treasurer) that the formulation was no
different than when it was first introduced 40-50 years ago. He also
said that you can get the same formulation (or active ingredients I am
not sure which) much more cheaply in some of the dog and cat repellent products.

The general consensus was that it was worthless as a borer deterrent.

John


lmmunro wrote:
> 
> Now that I'm reading this again, I realize that it is impossible to
> tell if the Garden Shield did that much good, since the infestation
> rate was the same in the bed with Garden Shield  and without, if it
> is coupled with aggressive cleanup. The Garden Shield bed showed a
> decrease in infestation but the non Garden Shield bed showed an
> increase, even with cleanup, So it probably did some good.
> One thing I did NOT do, and I'm wondering if this would make a
> difference: I did not cut my plants down for the winter, but let them
> keep growing. It was pretty mild last fall, and I wanted them to get
> every bit of benefit from the weather. But I did remove EVERYTHING
> from around them. That leads me to believe they lay their eggs right
> inside the rhizome leaves, dead or alive.
> Has anyone noticed a difference if they cut down their leaves, and if
> you cut, how short do you cut them?
> Laetitia
> 
> fasv--- In iris-talk@y..., "lmmunro" <lmmunro@h...> wrote:
> > I bought and tried the Garden Shield borer deterrent last year, and
> I
> > believe it DOES work. About 75% of my iris were attacked by the
> borer
> > in 2001 in one bed. I used Garden Shield and did a fastidious
> > cleanup. I would say about 25% of the iris were attacked there in
> > 2002. Contrast this to another bed which was lightly infested
> (maybe
> > 10%) in 2001, where I did not use Garden Shield, but did use
> > fastidious cleanup. The rate of infestation went up to about 25-
> 30%.
> > Another small bed with no infestation in 2001 was left alone; no
> > fastidious cleanup and no Garden Shield. The results were about 75%
> > infestation in 2002, similar to the original bed with the same
> > treatment (none) in 2001.
> > Garden Shield is a little on the expensive side; I am not going to
> > buy it again, even though there was noticeable improvement. I
> really
> > want an infestation rate alot lower than 25%. I am going to try the
> > Merit treatment in the spring, and also
> > put some moth balls in small vented canisters in the iris beds in
> the
> > fall and see if it deters the moth from finding my iris a
> desireable
> > place to lay its eggs. This way, the vapors will be emitted, and
> the
> > moth balls will not harm the native fauna. I will let you all know
> if
> > there was any success with this regimen.
> > Laetitia
> >
> > --- In iris-talk@y..., birdwoman424@a... wrote:
> > > In a message dated 8/16/2002 10:53:35 PM Eastern Daylight Time,
> > > alhbee@a... writes:
> > >
> > >
> > > > Bottom line is which is more reliable. From what I have read
> the
> > > > success rates under "ideal conditions" match that of cygon. The
> > key
> > > > is ideal conditions.
> > > >
> > > > Merit is a systemic and I would say that earthworm kill would
> be
> > > > neglible. Cygon on the other hand would kill.
> > > >
> > > > Al Bullock
> > > >
> > >
> > > Thank you for your reply. From what I read, the nematodes have to
> > be in a
> > > moist environment in order to survive -- that doesn't sound like
> a
> > good thing
> > > for my irises unless I had an underground irrigation system. I
> read
> > somewhere
> > > that Cygon kills birds. Is this true? Just look at my screen
> name,
> > this is
> > > the last thing I would want to have happen.
> > > Has anyone tried or have any feed back on a product called "Iris
> > Borer
> > > Deterrent by Garden Shield?
> > > Margie Brown, New York   Zone 7
> > >
> > >
> > > [Non-text portions of this message have been removed]
> 
> 
> 
> 
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-- 
John                     | "There be dragons here"
                         |  Annotation used by ancient cartographers
                         |  to indicate the edge of the known world.

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