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
Dennis: There was some very good information about scorch in the AIS
Bulletin some year ago. One year I had scorch intwo clumps in my garden.
Every rhizome that is linked with another will pass the infection on. I
understand that it is commoner in the south, and especially in
newly-planted gardens. Hope you get it under control. Lloyd Zurbrigg in
Durham NC
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