I have had some fairly new beekeeper ask me about pollen substitutes/supplements* and I know that Bjorn looked into this question fairly throughly sometime back. There are really two question I would like to pose and anyone with any experience in regards to either I will greatly appreciate you time and input. 1) of those commercially available products is there any one product that is superior to the rest? or perhaps more importantly is there any product which is really so inferior that you would avoid the product entirely? 2) in regards to pollen quality**... is there any natural sources of pollen who's quality is so extremely low that you would suggest some pollen supplementation would be worthwhile? *I have fed both commercial produced pollen patties and home made patties here but have decided that pollen is generally never the resource which limits hive growth here. **we do know there are some pollen collected by bees which are poisonous, so I am guessing there are also natural available pollen that have very low crude protein levels or don't contain anywhere near the essential amino acids necessary for the diet of the honeybee.