Re: borer control and I. pseudacorus


In a message dated 96-05-23 11:50:24 EDT, you write:

>Is it mostly in the South that I. pseudocorus is a problem?  I haven't heard
>of a problem up here.  I've grown I. pseudocorus for several years and my
>sister-in -law even longer.  It doesn't seed around or spread for us.   
>
>

Tony Huber from Canda, who is the world's most knowledgeable authority on
native Canadian irises, advises that I. pseudacorus is a SERIOUS threat to
native American species (versicolor, setosa) in eastern Canada.  Clarence
Mahan in VA, who, forgive me Lee, is incredulous about pseudacorus not
setting seed in WI!



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