Hi there! This is my first year really caring about my flower garden. All of the advice given here has been so helpful—thank you! My question is about these snapdragons—there are VERY tiny brown insects crawling all over the blooms. Seriously tiny. Too small to be aphids, I think?

Any ideas of what these critters are and what they're likely to do, if anything? Happy to let them be as long as they're not sucking the life out of the plants. They are dropping petals, but I'm unsure whether it's a result of the bugs or whether it's just time for those petals to go.