Here are some interesting photos of some industrious ants from the 2016 garden. These ants were keeping a herd of aphids under a dahlia flower. They actually milk the aphids by rubbing them with their antennae. These ants were under a Hollyhill Pinky, and as you can see the plant was in no way distressed about it.
Nature seems happy to be in a balance.
Click on the pictures to see them BIGGER.