I'm planning on polinating 2 VFTs this spring. I was wondering if the two plants I'm planning to cross does not flower simulataneously, then is there a way to preserve the pollen of one plant's flower so I could pollenate the other when the flower opens? Oh ya and how could I tell when the stigma of the venus flytrap is ready to take pollen? Is it ready right when it's open or do I have to wait about a day or 2?