disinfecting beardless iris

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I'm looking for experience and advice disinfecting beardless iris.
Bearded iris rhizomes are quite tolerant of a 10% bleach solution; a
bath of 10 or 15 minutes followed by a thorough rinse does a nice job of
killing any pathogens on the surface. I've done this a few times with
beardless iris, but am wondering how safe this is in general. Are there
types of iris, perhaps ones with sensitive roots, where this will
seriously damage the plants.

Ken Walker
Concord, CA USA