Re: Weed control and fungal leaf spot control
iris@hort.net
  • Subject: Re: Weed control and fungal leaf spot control
  • From: P* A* <p*@mindspring.com>
  • Date: Mon, 28 Mar 2011 23:18:15 -0400 (GMT-04:00)
I haven't tried Terrachlor but I am specifically using the Heritage as part of a rotation and since it has a different mode of action than the others I use.  Terrachlor has some warnings that it "can only be used once a year and may cause stunting" so I stayed away from it for that reason alone.  Heritage does not have that issue of limited use.  I think I've also been very fortunate that I have not built up any resistance over the years of using these chemicals.  If I got fungicide resistance I wouyld simple have to quit growing Bearded Iris. Coupled with Heritage working on dayliles for rust... that is a big plus.


-----Original Message-----
>From: Dana Brown <ddbro@sbcglobal.net>
>Sent: Mar 28, 2011 10:45 AM
>To: iris@hort.net
>Subject: Re: [iris] Weed control and fungal leaf spot control
>
>Paul,
>    We also use fluazifop for grass control but purchase it under the
>trade name 
>fusilade.  It works wonderfully for us on most of our
>grasses, especially the 
>bermuda grass.  We have sprayed it over the iris for
>years with no ill effects.
>    Have you tried Cleary's 3336 WP for a
>fungicide?  We have had great luck 
>with it.  Our local ag chemical dealer had
>it in stock, so I didn't have to 
>order it over the internet and it is much
>less expensive than Heritage.  
>
>    I'm also going to try the herbicide
>Stinger (clopyralid) this year.  I have 
>heard some good things about it and
>purchased it last year but never got around 
>to trying it.  This is another
>one you're supposed to be able to spray right 
>over the iris with no bad
>effects.
>
>Dana
>
>    
> 
>Dana Brown
>ddbro@sbcglobal.net
>Malevil Iris Gardens &
>Kennels
>www.malevil-iris.com
>
> I own a dog and I vote!!
>________________________________
>From: Paul Archer <pharcher@mindspring.com>
>To: Iris chat forum <iris@hort.net>
>Sent: Mon, March 28, 2011 3:48:08 AM
>Subject: [iris] Weed control and fungal leaf spot control
>
>
>The third
>herbicide is Ornamec (fluazifop) which is an annual grass killer.  I 
>got it
>off of eBay.  It requires an oil-based surfactant.  You can also purchase
>already containing a surfactant.  I tried it with salad oil plus some dish
>soap 
>to cut the oil some.  It took a while and I needed a second application
>a couple 
>of weeks later.  Helpful since it would not be wise to apply oil to
>your Iris 
>foliage. But the weeds were hurting and were not chocking out my
>Iris.  It also 
>seems to work better as the weather warms up and there is less
>rain which 
>stresses the weeds.  I completley drenched one Iris plant I
>planned to discard 
>to see if there was any effect.  It seemed fine and
>bloomed.  
>
>
>http://cooperseeds.com/lawnchem.php3?cat=preemergent&cartid=
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