Re: Fwd: Re: yellow iris leaves. what is wrong?
iris@hort.net
  • Subject: Re: Fwd: Re: yellow iris leaves. what is wrong?
  • From: C* C* <i*@aim.com>
  • Date: Sun, 4 Nov 2012 12:36:30 -0500 (EST)
I can't give an answer without answers to questions posted earlier about symptoms in named cultivars.
As far as I can tell you have different seedlings growing in different locations. So it could be a genetic factor. If it was the same seedling growing in two different places then it would say something else.
Do you have this yellowing with named iris cultivars that you are growing?
Some seedlings can have a chloroplast signalling problem. They can start out normal and then show symptoms over time. Or just have a problem processing a necessary nutrient. Ph of soil does affect availability of nutrients in soil. Have you tested ph ? 

Chuck Chapman


-----Original Message-----
From: James P. Reilly <jpreilly@zianet.com>
To: iris <iris@hort.net>
Sent: Sun, Nov 4, 2012 12:15 pm
Subject: Fwd: Re: [iris] yellow iris leaves.  what is wrong?

-------- Original Message --------
Subject: 	Re: [iris] yellow iris leaves. what is wrong?
Date: 	Sun, 4 Nov 2012 11:30:37 -0500 (EST)
From: 	HowieDash@aol.com
To: 	jpreilly@zianet.com
They have turned yellow over time. It is on more than one cross and not 
every plant in those crosses.  Even the increase is yellow on a couple
of them.
My suspicion is there is something missing in the soil. I'm actually
growing in two places. At my house I'm either growing in a soil/compost 
mix or a soil/sand/compost mix.  The seedlings that I didn't have space
for in the other location I'm growing in pots. None of them have turned 
yellow and they are growing well, though not as well as the ones in the
ground.
In my other location I'm growing in native soil, which is mostly clay.
My suspicion is the soil is lacking something the plants need.
Yesterday I watered them with BR-61 and supplemental zinc. The owner of 
the farm seems to think that is what is missing, because he sprays his
pecan trees with the zinc. To me it seems like an iron deficiency but I 
just don't know.
Howie Dash
In a message dated 11/4/2012 7:25:33 A.M. Mountain Standard Time,
jpreilly@zianet.com writes:




   -------- Original Message --------
   Subject: 	Re: [iris] yellow iris leaves. what is wrong?
   Date: 	Sat, 3 Nov 2012 21:08:07 -0400 (EDT)
   From: 	Chuck Chapman <irischapman@aim.com>
   Reply-To: 	iris@hort.net
   To: 	iris@hort.net
   CC: 	howiedash@aol.com
If only some of the seedlings are like this, but not that many, then 
   it could be genetic. Especially if they have always been yellow.
If it is named varieties then a different story. There are different patterns of chlorosis (leaves turning yellow). A good picture would help. Otherwise need a description. Does it start on old leaves or new leaves. Is in veins or between veins? From base out or from center of 
   leaves out?

   Also any information on what treatments he has done to soil.

   Each problem has it's own symptoms.

   Chuck Chapman

   -Original Message-----
   From: SDAyres2<SDAyres2@aol.com>
   To: iris<iris@hort.net>
   Cc: howiedash<howiedash@aol.com>
   Sent: Sat, Nov 3, 2012 4:23 pm
   Subject: [iris] yellow iris leaves.  what is wrong?

   A friend of mine has a problem with his irises.  He emailed the
   following
   to me.
"I haven't joined Hort.net yet (maybe I should) and I have a question 
   about my iris seedlings at Wes's. Some of the plants the leaves  are
almost yellow on the whole plant like I am missing something that makes 
   the chlorophyll. My guess is iron, but I'm not sure. What do I  need
   to add to fix the problem? I'm growing on clay soil here in the
   valley."

   Does anyone have an idea of what is  wrong?
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