Deadnettle (Lamium purpureum) is a popular flower among bees. It’s also a common weed in the northeastern US…right now it’s blooming in great abundance in PA, especially along the edges of cornfields where I can only imagine it was accidentally spread by farm equipment.
I think these are all Osmia…cornifrons? I’m not one hundred percent sure, so check me on it if you’re good at bees.*
*PS I ❤ bees