It’s mum season (Chrysanthemum). These photos were taken last year.
The bumble bees were highly attracted to these flowers. I had never seen that many bees in one place. Their buzzing was extremely loud because it was so many of them. They were taking over, but I had to, of course, take some photos as these flowers are in bloom for such a short time. I plan to go back for next year’s mum festival, and I’ll be ready for the bees once again.