Re: Is this iris nutrient deficient?
- Subject: Re: Is this iris nutrient deficient?
- From: Betty Ann Gunther <email@example.com>
- Date: Mon, 09 Apr 2012 16:08:17 -0600
I recommend you find out what is killing your trees before you start
spraying. If you give the symptoms to your county agent you may be
able to find a honey bee friendly way to take care of them as well.
Using the Bayer product on fruit trees won't help the honey bees. |
Betty G. in Los Alamos
On 4/8/2012 5:16 PM, firstname.lastname@example.org wrote:
Thanks for the information. I just attended a briefing on
beneficial insects. It mentioned some wasps kill aphids. He
suggested letting them say if the wasp nests aren't close to
the house. I found a wasp nest that appeared to be
inactive. Tapping, stronger tapping and then cutting the nest
loose from a bush near the window allowed me to reposition it
to the back of the yard. I was ready to flee if any wasp
appeared. I don't know if the wasps hibernate over the winter
of if it was just empty.
Don't want to kill the honey bees since I have fruit
trees. I think I will try spraying irises with lemon dish
soap (Dana's advice). Now the problem is that I just bought a
Bayer product that has imidacloprid before I read the
wikipedia article. I have borers (or is it japanese beetles)
that are killing my trees. They are very bad. Apple,
Peachcot, Pear have all succumbed. I am seeing it in the
other trees as well. Even the Pecan shows some signs of
investation. I had someone sprayed for years but it didn't
save my Peachcot. That was a wonderful tree and fruit. I may
have to use Bayer for the trees and soap for the irises.
P.S the below picture is from 2006. I don't see a strong
infestation this year.
should also be aware that imidacloprid is toxic to
honeybees feeding on the pollen and nectar of those
On Apr 8, 2012, at 2:46 PM, Bill Chaney wrote:
> 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.
> From: "email@example.com" <firstname.lastname@example.org>
> To: email@example.com
> Sent: Sunday, April 8, 2012 9:54 AM
> Subject: Re: [iris-photos] Is this iris nutrient
> 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
> In a message dated 4/8/2012 9:03:26 A.M. Mountain
Daylight Time, firstname.lastname@example.org 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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