Vic - Question about I. 'Aichi-No-Kagavaki'

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Ken, Rodney, or anyone,

I have a question.  Approximately 4 years ago I obtained the I. pseudacorus x I. ensata cross ?Aichi-No-Kagavaki.?  I am growing it in an 18-gallon container with no drainage.   It goes dormant in the winter and after breaking dormancy in the spring grows like mad.  However, there has never been a hint of a bloom since I obtained it.

I grew up in New Orleans, Louisiana and even though I have never lived there as an adult, because of family ties, I have spent a good deal of time in the area.  New Orleans is in zone 9a and has less cold than where I reside in Florida in Zone 8b.  It always appeared to me that I. pseudacourus planted in the area always bloomed much more freely after an abnormally cold winter which I attributed to more winter chilling.  My experience with Japanese irises approaches zero.  My question:  Is my ?Aichi-No-Kagavaki.? iris not blooming because it is not getting sufficient winter chill due to its I. pseudacourous background?  Or is something else, like day length, or?

Vic

Victor W. Lambou

Zone 8b

Crawfordville, Florida