Oxydendron is an Ericaceae, same as the blueberry. There are lots of very good honey made of this family, and even some sligthly poisonous as Rhododendron's hon

Oxydendron is an Ericaceae, same as the blueberry. There are lots of very good honey made of this family, and even some sligthly poisonous as Rhododendron's honey. None of them are this blue. Blueberry honey is amber and the well known Oxydendron honey is just ligther in color. Unless something has changed in the mix is dubious that is the culprit here. One possibility would be some bee antifungus treatment using methylene blue, because it does not contain copper (Anything with copper would be toxic for bees). This does not explain the aluminium in any case. Other could bee hydrangeas treated with aluminum to remain blue, but I'm just speculating. Bees are attracted only by some hydrangeas that don't need this. They like my blue bird Hydrangea serrata for sure.