Oo, tincturing pollen sounds very interesting...hadn't thought of that, and definitely need to learn more about it!
I haven't put a lot of time into finding out more about my pollen question (lots to do this time of year, not much leisure for research!) but it sounds like pollen is often used for desensitization of individuals with allergies. If that's the case, perhaps collecting at times of pollen release by common allergen plants might be beneficial. I like that this approach is particularly beneficial when used with locally collected pollen.
Pretty much the only other thing I have learned is that the pollen collector
should only be left on for two weeks per hive. I think that is two weeks out of the whole season. And it doesn't collect all the pollen, but only some of it. So hopefully will not have too much effect on the bees, especially if used at a time of major pollen availability and the bees don't have to go too far to collect the pollen.
I was already intending to plant mugo (or mugho) pines as a source of pine pollen at a height that humans can easily reach and collect, with the intention of drying the pine pollen for personal use and sale (and maybe, now that I'm thinking about it, tincturing). I think that for something as easily collected as pine pollen, logistically there isn't any benefit to stealing it from the bees - I could probably collect a larger amount myself by shaking the branches inside a paper bag. i wonder, though, is there any difference in benefits of pollen collected by bees versus pollen that humans collect in a bag? No doubt the bees can collect a more diverse
local assemblage of pollen, but is there any other benefit intrinsic to bees having handled the pollen? I am not aware that they are adding any bee spit or anything to pollen, isn't it just carried on the legs, and if so I guess the main benefit is that they are doing the work of collection?