grandifloras

Two days ago I saw that my grandifloras were in full bloom while my vallisneriifolias are just now coming out of dormancy. I really wanted to cross these two this year because the valls are probably old enough to bloom now. So, I needed a way to save the pollen. Hard to do with a flower that...

I received a ping grandiflora, and there were about five thin leaves, and there seems to already be a hibernacula formed in the center. What months do you people usually put your grandifloras through dormancy? I read a website that grandiflora's are Irish and temperate so should be put through...