Re: CULT: Rot - retention/persistence in soil?

Bill asks:
>My question is whether I can/should replant those "hot spots" with other
>irises, or if the rot (bacteria?) persists in the soil there.

I can't answer the question.  My first case of rot showed up in an iris that
is still in the same place.  For the first three years it nearly rotted to
extinction and then it ceased to get rot after that.  It is still in place
and this year I had five bloom stalks on the clump.  I've puzzled over what
happened and why it might be so.  I thought I had a true rotter in the
plant.  One with a disposition toward rot, then it just quit happening.
I've had rot elsewhere and near that clump, but not in that clump for two
years.  Another example of rot occurred last year in the dry, hot heat of
summer (100 plus) in two clumps.  Ultimately I dug those clumps, cleaned off
the rotted portions, soaked them in a Clorox solution and laid them in the
hot garage to dry.  Several fans continued to rot even after the treatment.
But some did not.  I planted those that didn't rot back into the exact spot.
They have done well since and have made good sized clumps and so far there
is no evidence of rot.  Neither of these cases quite fit the usual scenario
of rot I've experienced.  Especially the one that occurred in the heat
during a long, long dry spell.  I thought the high temps would be enough to
stop any rot since normally it occurs during temps in the 80s and disappears
when it gets too hot.  Also, I don't give supplemental water.  Now I don't
really know.  I personally suspect the rot organisms are already in the soil
or the plant somehow and just wait 'til conditions are right to show up.
I'm now doubtful of just what those conditions may be after the experience.
No question about it being rot, though.  That smell is distinctly
identifiable.

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



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