Looks like dead leaves. I don't think Thuga have pollen sacks. Only orchids and milkweeds have them.

And bees fly around with pollen sacks they make themselves.

I had 6 Arborvitae growing in a row as a screen and after 15 years they all died, just as they were starting to blend together as a screen. Maybe they have a short lifespan like Lombardy poplars LOL.

I think it's Thuga or maybe something similar? My Thuga always flopped over from snow and ice. In retrospect I should have used Canada hemlocks or Japanese yews instead of Arborvitae. The ice storm missed me.

Jay.

I do believe that the dark needle tips, showing through the ice, are male strobili.

When the female cones first begin to emerge, they can look similar, for a time until they put some growth on later in the season.

Male strobili:

https://www.minnesotawildflowers.info/udata/r9ndp23q/pd3/thuja-occidentalis-15-8.jpg

so pollen producing appendages.. but not sacs ... eh??

https://www.minnesotawildflowers.info/tree/white-cedar

Ya, less baggage without the sacs. lol

nice link!