CULT: Disease resistance

From: "Patrick Orr" <PatrickJOrr@hotmail.com>

Walter,

Do you know if there are cultivars resistant to this disease?  Did any of
the historics in Texas or Oklahoma show any resistance to Scorch during the
seventies and eighties?

Along with good branching, bud count, form, etc. that are hybridized,
disease resistance should be worked on as well.  I know there are some
hybridizers out there working on developing disease resistant varieties, but
is Scorch one of them?

And while we are at it, has anyone worked on developing a rot resistant
iris?  If so, I would like to get my hands on one and incorporate it into my
future hybridizing efforts.

Patrick Orr
Zone 9

> The disease scorch was rampant in Texas and Oklahoma in
> the late seventies and early eighties, and I don't know what the
> situation there regarding it have been in the last several years.
> Scorch may kill an entire clump or it may take only certain
> rhizomes in a clump.  In order not to lose an entire clump to
> scorch, it was decided that separating the rhizomes in a clump
> might prevent a total loss, so in the fall I took a knife and cut the
> rhizomes apart in each clump.  The knife was dipped in clorox after
> each cut.  This practice worked well but was time-consuming.  I
> think it was Dr. Denman who came up with this idea.
>
> Walter Moores
> Enid Lake, MS 7/8
>
>

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