Ray E. was heading in the right direction because he picked up on some family characteristics.
Terry E. got it…
"Blue Ginger (Dichorisandra thyrsiflora).
As per Ray’s offering above, this species is in the same family, Commelinaceae, as the spiderworts, dayflowers, etc."
To any plant i.d. students that may accidentally read this: family identification is important and helpful. The characteristic triangular flower shape (three petals) and six stamens is a dead giveaway (I get some guff for making them learn families).
Plant photos taken at the Hawaii Tropical Botanical Garden near Hilo. Lush and gorgeous!
We grow it as a tropical here, but it certainly doesn’t reach 6′ tall as in Hawaii. Easy enough to dig up and overwinter (and share with your friends – we got our clump from local plant goddess Elissa Steeves).