Re: Japanese Iris


In a message dated 97-03-02 23:02:53 EST, you write:

<< Somewhere I read that even a small amount of lime is certain death to 
 Japanese Iris.
 Will someone please comment on this assertion ? >>

What you read is correct.  Even leaching from foundations, cement ponds,
sidewalks, etc. can cause Japanese irises to deteriorate and die.  Now,
having said this in a fairly "absolute" manner, someone will probably come
online and say they grow their Japanese irises in a soil with a reading of Ph
of 8---but I wouldn't try it.  

Soils that grow azaleas well will normally grow Japanese irises well.  If the
Japanese iris leaves turn yellow in areas with acidic soils, it is almost
always caused by insufficient iron.  They need and use lots of iron.  Ferrous
sulfate worked into the soil will usually cure this, as will various iron
supplements. Clarence Mahan in VA



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