Sorry to tell you but pollen is only good for about 2 weeks. A little longer in the fridge but no more.

The reason for this is pollen from many years or hundreds of years would be pollenating now if it could.

The need for males would almost stop. We are obsolite boys. LOL

Carefully pick nanners of male flowers and place them on a ziplock bag and place in the fridge veggie drawer. That's it. Oh , use them as soon as you can. See males come out about 2 weeks before females are in full bloom.

I have been getting a few nanners on the strains I have and I love to get a few femm seed each time. I stressed some out that had cynaobacteria with physan20 and ended up with a shitload femm seed.