Buzz pollination is a process that sounds very nice for both flower and bee: Bumblebees and some other native bees “use their flight muscles to vibrate the flower until the pollen is shaken loose,” Mr. Seidler said. Like honeybees, they use their middle pair of legs to gather the pollen into pollen sacks. “You can see these on bees when they’re flying by.”
Sometimes they sit on the flower and vibrate; sometimes they hang upside down and do their thing. And when they fly off to other flowers, some of that pollen just naturally falls off and pollinates the plants.