I have noticed little hairs with a tiny green ball at the end on the bottom side of the leaves on some of my million bells. What are these and should I be worried about them?
Those precious eggs hold what will be Green Lacewing babies. They are hung on threads to keep them from predators. The threads are made of mucus that has hardened in the air.
Green Lacewing will eat lots of Aphids in your garden, they also will eat good butterfly eggs, so you need to determine if they stay or your evicting them!