CULT: SIB: gypsum in new beardless bed


Hello All,

I am in the process of building a new beardless bed, primarily for Sibs 
but also versicolor, setosa, and perhaps a few JI and pseudX.  My soil 
is very clayey and slightly acidic.  I typically add large amounts of 
gypsum when creating new bearded beds to try to chemically break up the 
clay, but I have no idea how beardless irises might react to gypsum. 
Does anyone know if gypsum is good, bad, or neutral where beardless 
irises are concerned?

  I know I have to keep lime away from the beardless.

Thank you for any guidance anyone may be able to provide.

Laurie
---------------
laurief@paulbunyan.net
http://www.geocities.com/lfandjg
http://www.angelfire.com/mn3/shadowood/irisintro.html
USDA zone 3b, AHS zone 4 - northern Minnesota
normal annual precipitation 26-27"
slightly acid, potassium deficient, clay soil



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