Maybe recheck this growth when the weather cools down? Perhaps it's heat dormancy (summer dormancy) at work rather than ploidy?
I'm not seeing that in mine and that may partly be because the tets I have tend to be earlier with their bloom time. They have bloomed, rested and many have began actively growing. I have more dips and the growth I see there is all over the place, but it's more or less tied to when they quit blooming. Some of the later blooming plants are really beginning to shut down now that bloom is drawing to an end.
Also, rebloom, setting pods and producing proliferations seem to alter the dormancy. And I think it may also affect how the plant performs further down the line because the energy it's expending now to produce blooms and new plants keeps it from resting and then putting that energy into a subsequent season of bloom. I think in really hot climates, that period of rest may be beneficial to future growth. That's just my observation with my daylilies so far and, therefore, contains some speculation
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