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

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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