Re: Replanting JIs

In a message dated 96-08-15 19:39:41 EDT, you write:

> Why can't you do the same with Japanese Irises?  I know
>nothing about them.
>
>

I appreciated your answers to my questions...(I was fairly sure you were not
talking about JIs).  Even with bearded iris, if we in the East fertilize very
much we will have lots of rot because of our wet climates.  Nitrogen
fertilizers and bone meal induce rot here.  

We do not have a scientific basis to explain why JIs cannot be grown in the
same soil after 3 or 4 years, but most Japanese and many American JI experts
believe they put something into the soil that is toxic to themselves.  Now if
one plants the JIs at the edge of a natural pond that sometimes floods, you
can grow the JIs in the same place.  If they are planted at the base of a
water spout or solar heating drain, it is usually ok to replant them in the
same place---so it would seem that enough water will wash out whatever it is
the JIs deposit in the soil.  In Japan, one of the reasons most people grow
them in pots is so they can change the soil often.  Thanks again for
responding, Clarence Mahan in very wet Virginia
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