Re: Iris problem

Hello Barbara,

I think nematodes do get into iris.  I will go further and say that what I
suspect is nematode damage here results in swollen nodules on the roots,
lack of vigor, dwindling clumps, susceptability to 'scorch'.  I haven't
noticed any increased susceptibility to rot, but I have noticed that what I
have believed to be nematode signatures on the root system occur in beds
that have been improved in tilthe over the natural hard red clay.  The clay
has it's own problems, but signs of nematodes invading to the point of
affecting iris growth does not seem to be one of them.

I'm not sure, but I think there is information on nematodes and iris in the
archives.  I haven't made a search to be sure but I seem to recall some
discussions.  They may have been more about beneficial nematodes, though.
Have you searched there for information?

Donald Eaves
donald@eastland.net
Texas Zone 7b, USA

>As I was
> digging up yet more rotting iris this morning, I accidently dug up one
that
> was not anchored very well.  It had short stubby roots.  I threw it over
the
> fence.  I had no more than done so than it dawned on me that those roots
> somewhat resembled nematode damade.  Of course I couldn't find the rhizome
I had just
> tossed so I cannot have it tested, if indeed one can test for nematodes.
I
> sort of remember seeing other rhizomes with these roots here and there now
that
> I think of it. Does anyone know if nematodes ever attack iris?  Normally I
do
> not have a big problem with nematodes as I have so much clay and acidity

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