Re: CULT: Leaf Rot

--- In iris-photos@yahoogroups.com, "Fleurdelis/Acorn Hill 
Publishing" <fleurdelis@s...> wrote:
  Does anyone know what this stuff is and how to treat it?  It seems 
to start at the top and work itself down to the leaf base.


There is a bacterial infection which can cause a leaf rot that is 
different than warm-weather soft-rot but the appearance is somewhat 
different than the photo you post.

I'm seeing some damage here in North Carolina that looks a lot like 
what you show, which I was assuming was the result of winter damage 
to the apical meristem (growing tip of that rhizome) and nearby 
tissues.  As it grows out there is healthy growth behind it provided 
soft rot doesn't set in, which it has in some cases here as the 
weather has warmed.

Just where in Southern Oregon are you?  East or West?  The Rogue 
River area is likely to have a somewhat different range of problems 
than those areas east of the Cascades.

Neil Mogensen now living in western NC


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