Re: CULT: Scorch

>> Just exactly what is "Scorch", what does it
>>look like (how do you identify it) and how do you treat it?
>
>Glenn, I'm not sure what the heck scorch is, but I know what it looks like.
>Your TB fans start to turn reddish brown and die back from the tips. This
>can happen overnight or over the course of a few days. Bloomstalks are
>stunted. Although the bases of the fans and the rhizome look healthy and
>firm externally, when you start cutting back the dead fans and tugging away
>others in your increasing frustration, you find that the innermost fan is a
>withered, wet, caramel-colored glop. Dig up the rhizome and you'll notice
>that roots are rotting.
>
>All this time the rhizome looks firm and healthy!
>
>I'm told that some people trim the bad fans and roots, soak the rhizome in
>dilute bleach solution, bleach the soil, and then dip the rhizome in
>Rootone and replant. In three years or so, they'll have normal bloom again.
>In my case, I have enough other rhizomes I'm going to pitch the infected
>fellows.

Wow.  That's what I had, and for lack of a better term, I called it rot.
B'cuz that's what was happening, the central leaves were rotting into slime.
This happened to me during the second week of March when we had temps drop
to 7degF.

I treated just as you said, with bleach, and they're all doing quite well
here 1 month later.  The ones I had to amputate the main fan off of, have
had the next biggest increases have really grown huge.

I guess true "rot" happens from the bottom up?  and not from the top down?

Dennis Kramb; dkramb@tso.cin.ix.net
Cincinnati, Ohio USA; USDA Zone 6; AIS Region 6
Member of AIS, ASI, HIPS, RIS, SIGNA, & Miami Valley Iris Society
Primary Interests: Hybridizing Arilbreds, Raising Native Ohio Species Irises
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