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

 

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

 

http://hdl.handle.net/2027/txa.tarb086546Â

 

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.Â

 

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.Â

 

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

 

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.Â

 

 

 

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

ÂÂÂÂÂÂÂÂÂÂ Phone:Â 541 672-1010

ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ jfpf@riousa.com

 

 

 

From: iris-species@yahoogroups.com [mailto:iris-species@yahoogroups.com]
Sent: Thursday, November 13, 2014 9:11 PM
To: iris-species@yahoogroups.com
Subject: RE: [iris-species] Bearded iris in hot/humid US (Z8b and warmer)

 

 

Shaub, the link to the article didnât work

 

From: iris-species@yahoogroups.com [mailto:iris-species@yahoogroups.com]
Sent: Thursday, November 13, 2014 6:15 PM
To: iris-species@yahoogroups.com
Subject: Re: [iris-species] Bearded iris in hot/humid US (Z8b and warmer)

 

 

Many bearded iris will grow in zone 9, if it is a Mediterranean climate. I beleive the problem is the combination of summer heat with humidity that does them in.

Ken Walker
Concord, CA USA
Zone 9

On 11/13/2014 3:46 PM, Sean Zera z*@umich.edu [iris-species] wrote:

 

I don't know if it's in cultivation in the US, but it seems to me that Iris sicula could be useful for breeding heat-tolerant TBs. It's a tetraploid native to Sicily, Malta and Gozo in the Mediterranean. I assume some of the old diploids are heat tolerant when they're closer to wild pallida then to variegata.

 

Sean Z

Zone 6a

SE Michigan, where winter really kicked in today

 

On Thu, Nov 13, 2014 at 4:17 PM, Shaub Dunkley s*@bellsouth.net [iris-species] <i*@yahoogroups.com> wrote:

 

In his note to Jack Finney, Mark Cook made comment about being too far
south (z8b) to grow most kinds of irises. I'm very interested in the
matter of bearded iris in the Deep South US (or hot/humid climates
anywhere). My interest is broader than the species level but discussion
here at that level would be great. I speculate there is room for more
optimism that a number of bearded irises can be grown reasonably well in
z8b and some even marching into z9. A 1942 study at TX A&M found 149
cultivars out of 582 well adapted to College Station, TX. Z8b now, not
sure what it was back then. Temptation, there are cultivars included
that are species equivalents, e.g 'Nudicaulis' which equates to Iris
nudicaulis (Hooker 1869). And Jack, nice performances by old diploid TBs
there.

One place to view article: (remove spaces) http: //
catalog.hathitrust.org/api/volumes/oclc/10651980. html

If you subscribe to the iris-talk listserve and and want to chime in see
the "CULT: Growing Iris South Florida" thread. If you happen to be a
HIPS member, my main stomping grounds, I have a thread going on there
too. Or I'd also be delighted to discuss by direct email: phloid at
bellsouth dot net

I personally want to hear more irises talking for themselves. We need
field data and trials work.

Thanks,
Shaub Dunkley
Z6b near Asheville NC

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