You are welcome! Thanks for the acorn tip!

I've only done fairly short-term frozen pollen storage. Years ago I had a tet conversion of Fairy Charm which was blooming out, and one of my most anticipated "victims", Hanson's "Palace of Lights", was just showing a couple of emerging scapes.

I had read that moisture was the enemy of frozen pollen, but I didn't want to deal with cotton balls, paint brushes, Q-tips or any other secondary methods of application.

I separated the pollen sacs from the stamens as soon as I harvested them, so that the sacs would dry quickly. I let them dry overnight, then placed them in small plastic containers. (Those small, snap-cap lab vials would have been nice to have)

I put the containers in the freezer, but left them open. After about 10 minutes I barely opened the freezer door, reached in and quickly snapped the lids shut. I felt that this pre-chill would prevent or minimize the inclusion of warm, humid air in the containers. A month later, when Palace of Lights bloomed, I pulled a container, let it warm to room temperature, and used fine-tipped hemostats to grip the sacs by their tips, which is the same way I handle "fresh-dried" pollen. It was every bit as fertile as fresh. I used the same pre-chill procedure to re-freeze the pollen, and continued to use it until it was gone.

That's a good idea about letting the container cool down before snapping the cap on it. Great idea!

I am going to try my hand at freezing pollen again because the order I received recently from Maryott's has several of the cultivars sending up scapes. I want to have that pollen to use in the Spring. So I will be trying my hand at it again. I plan to take some notes this time as to what I did and whether is was successful (in pollinating some Spring blooms).