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Re: Is this iris nutrient deficient?
  • Subject: Re: Is this iris nutrient deficient?
  • From: John Jones <jijones@usjoneses.com>
  • Date: Sun, 8 Apr 2012 15:42:25 -0700

You should also be aware that  imidacloprid is toxic to honeybees feeding on 
the pollen and nectar of those plants.


On Apr 8, 2012, at 2:46 PM, Bill Chaney wrote:

> Scarlett,
> I am a retired entomologist, turned iris breeder, and I spent a 20 year 
> career trying to find ways to control aphids. There are a number of 
> biological controls that can be effective, but for any biological control 
> to work, a population of aphids must be tolerated before the control works. 
>  Ladybugs and green lacewings are your best bets for biological controls 
> that can be purchased, but naturally occurring populations of beneficial 
> insects are always best, but somewhat unreliable.
> The good news is that there is an effective insecticide on the market that 
> is much safer that disyston.  The product is imidacloprid.  Look for it in 
> the active ingredient list. It is systemic and quite effective on aphids. 
> Always read and follow  label directions, but I have used it with great 
> success.
> Bill
> From: "sdayres2@aol.com" <sdayres2@aol.com>
> To: iris-photos@yahoogroups.com 
> Sent: Sunday, April 8, 2012 9:54 AM
> Subject: Re: [iris-photos] Is this iris nutrient deficient?
> Dana:
> Yes I do have aphids.  Would they prefer one variety over the other 
> Arilbreds around them?  Question is what to use to get rid of the critters. 
>  Soapy water doesn't get into the crevices.  You can buy ladybugs.  But the 
> first thing they will do is exercise their wings and fly away.  Anybody 
> know anyway to keep the ladybug critters in the yard?  You can buy preying 
> mantis eggs.  But they are cannibalistic and the first ones out will fatten 
> themselves on the siblings.   I don't know how to break apart the eggs from 
> each other without damaging the eggs.  Anyone try green lacewings?
>  I miss Disyston (spelling), but that has now been outlawed.  Anyway, I am 
> trying to encourage the beneficial bugs.
> Scarlett
> In a message dated 4/8/2012 9:03:26 A.M. Mountain Daylight Time, 
> ddbro@sbcglobal.net writes:
> I have seen this type of damage with aphids and aphids love arilbreds!
> Dana D. Brown 
> Malevil Iris Gardens & Kennels 
> www.malevil- iris.com 
> Lubbock, TX   79403 
> Zone 7 USDA, Zone 10 Sunset 
> ddbro@sbcglobal. net
> Home of:
> Irongate's Racy Tracy
> Irongate's Kisses In The Wind
> Merrimac's Amarula CGC TDI 
> CH. Merrimac the Agean CDX, RE, CGC, TDI 

John and Joanne Jones
American Iris Society
35572 Linda Drive
Fremont, CA 94536


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