RE: Bearded iris in hot/humid US (Z8b and warmer)

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Here is a link that worked for me to the 1942 article on bearded iris durability in Texas. 

http://hdl.handle.net/2027/txa.tarb086546 

I downloaded it, but it came out as an html doc.  I was able to convert it to a pdf.

It is a beautifully done study, statistically elegant. 

They started with 582 varieties of irises.

Adaptability ratings were based on size of plant, rapidity of growth, and amount of bloom.  A 1-10 scale was used. 

It found that irises with chromosome count of 24, 36, 40, and 44 did better than those with 47-50. 

Only one variety, Azure Glow got an adaptability rating of 10.

There were some diploids which I currently grow that were rated 9/10:

Mme Chobaut

Monsignor

Quaker Lady

Queen of May

Mark Cook, if you are ever in the mood to repeat the Texas study, I would be happy to provide some of each of the above to you.  I would need yearâs advance notice, though, because the deer keep scrambling my collection and I have to keep re-identifying some of my irises.  The article gives plenty of details to make a good duplication of the study conditions possible.  It would be a lot of work, however. 

I must say that I am usually very negative about Internet dialogue groups b/c they have been insipid in my experience.  Not this one though.  In just a couple of days you folks have opened up several iris knowledge âdoorsâ for me.  Thank you so much.

John R. "Jack" Finney PhD

1433 SE Kane St., Roseburg OR 97470

           Phone:  541 672-1010

                jfpf@...