interesting article Mikey. We live on the edge of urban, so we get city plants and trees in addition to the back hills of hardwood trees and manzanita and buck brush. Pretty diverse.
However, a couple of weeks ago I was helping a fellow new beek with her overwintered hive. She lives in a forest of oak trees. When we opened the lid there was an overpowering odor of fresh wet bee poop. Turns out that it could very well be that the bees got into what is called 'Oak Honeydew', which contains ash, which give honeybees the runs.. And boy did it! Tons of poop everywhere. I don't know what this mean to beeks in the oaks, like should they expect bouts of diahhrea? Beats me ~ shrug. What a shame if you live amongst the oaks, and love bees, but they will get sick.