Your collection is beautiful. Do you grow any of them in the ground? I know that the heydichiums are hardy in our zone. My white butterfly is in the ground and so is another NOID tall one with pale yellow blooms. I dug up the orange bottlebrush because it was getting too much sun, but haven't replanted it. I overwintered those as well as my curcuma in the garage, last year. I just planted the curcuma, because it was about the burst the pot it was it.