Help requested - Brunsvigia josephinae rot <:-(

Fri, 21 Oct 2011 17:07:55 PDT
Hello all, and much THANKS to those who responded. 
For Hans ... I have only a few Hippeastrums, not nearby and which appear healthy.  I could see no obvious insects under a magnifying glass, but I know some can be microscopic.  At the recommendation of a local nurseryman, my first approach it to treat with a product called Physan 20.  It is labelled as an Algaecide, Fungicide, Bactericide and Virucide (!) with the following 2 active ingredients at 10% each:
dimethyl benzyl ammonium chloride
ethylbenzyl ammonium chloride 
Has anybody used and/or had successes with this product?
Thanks again for all suggestions,
Ken Blackford,
San Diego

--- On Sun, 10/16/11, Ken <> wrote:

I discovered some rot in the upper old leaf bases of this Brunsvigia josephinae.  It bloomed in August and September this year ... and we had a freak heavy rainstorm then followed by warm weather ... which I suspect is responsible for this rot.  Any suggestions on treatment?  Sulphur?  A fungicide?…

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