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[iris] REB: observations & checklist <spring> bloom time

I've been racking my brain trying to remember which oncer cultivars I noticed 15 years ago that seemed to be temperature regulated vs those that were "fixed" by daylength.

Interestingly, the only one I can think of for sure that has bloom timing independent of spring daylength (i.e., blooms earlier some years than others) is VICTORIA FALLS, which never reblooms here but has some offspring that rebloom here and reblooms reliably some places. I think.

So now I'm wondering if cultivars with variable timing of spring bloom that are <not> registered as rebloomers, or newer intros that haven't been around long enough to have sporadic rebloom reported (or to be in the ideal climate conditions for that particular cultivar to rebloom) might be a place to look to add diversity to eastern rebloom mixes.

Now to see if I can find out if some GBK newer bestest intros have that kind of variable bloom timing....other than Chuck's recent comments about IMMORTALITY's registered bloom timing, any of you been struck by how different the spring bloom timing of any cultivars has been year to year or at odds with registered timing of bloom? I.e,. registered as E but blooms M or even L? or vice versa?

Linda Mann east Tennessee USA zone 7/8
East Tennessee Iris Society <http://www.DiscoverET.org/etis>
Region 7, Kentucky-Tennessee <http://www.aisregion7.org>
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