Re: ROT, Neglect & TBs

Concerning Southern Blight in iris-
Does anyone know what the organism is? I've never heard of it.

Organic matter will make no difference. Fungi usually enter plants by 
inserting an organ call a "hyphae" (if my memory serves me 
correctly), though splashing rain and mechanical wounding can aid 
some fungi. Each one is different. The physiological basis for 
resistance is different in each case, sometime it is a result of 
hypersensitivity. The plant cells die around the fungal infection so 
quickly that it can't spread. Sometimes by toxins, sometimes by cell 
wall structure such that the fungus cannot penetrate. The newer 
fungicides also operate this way. If such a critter exists, I'd 
investigate spraying Ridomyl/Bravo with sticker/spreader, though each 
person must see to regulations in his/her area.

Hope this helps,
Steve
J. Steven Brown              Mt. Gretna Gardens      
                             Iris and Daylilies.                               
2493 Pinch Road
Manheim, PA 17545-9466
USA                     Internet:jsbrown@redrose.net
(717) 664-4066          Homepage:"http://www.success.net/
  fax 664-5081                                 mggarden/"
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