If you are super anxious to get rid of him you can cut a limb off and leave it in water for the next couple days on a windowsill or something. The flowers should continue to open.

You only need probably one "cluster" worth or so to create seeds. Each single pollen grain has the capacity to reproduce with a single calyx, so really you only need a couple flowers worth. I would try to get as much as possible if I were you, just to ensure success.

I read that pollen can be stored in the freezer for up to several months. However, you must be sure that it's COMPLETELY dry to maintain viability. Moisture is the nemesis of pollen. Try hard to separate any male flower material from the actual pollen with a screen or something to prevent a wet piece of flower from killing pollen when you store it.

Hope this is what you were looking for:thumbsup:
C-ya