Nonbloom--Kentucky Derby

I'm interested that many of you (who grow many more iris that I!!) have 
lots of non-blooming iris even after many years.  I am curious if anyone 
has any specific advice about Kentucky Derby.  Two years ago I planted 
several new-to-me bearded iris varieties obtained from local iris 
growers.  All but Kentucky Derby have bloomed and it has made a large 
clump.  It is planted between two other varieties that did bloom 
(unfortunately these are both yellows that I purchased unnamed) so I am 
wondering if it is slow to bloom or if it might need more sun or other 
pampering that I have not provided.  I am hoping it will bloom this year, 
but want to move it or do something if it doesn't.  

BTW, I have a variety that I believe is fairly old (bicolor white with 
purple falls--my father-in-law gave it to me 13 years ago--don't know 
how long he had it) that bloomed and increased phenomenally in my old yard 
(a few miles from my current home).  I planted a couple of healthy rhizomes 
here and it bloomed well then succumbed to rot.  The original plantings at the 
old house are all still fine--so I am definitely a believer in cultural 
conditions being a key to rot!

Debbie Green
Williamsburg, Va
dxgree@facstaff.wm.edu

P.S. I am beginning to think I will have to start joining some of these 
iris societies--can one of the Virginians on this list suggest a place to 
start??
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