Squirrels are our little chatty neighbors who dig out everything I ever tried to plant in the patio. Even garlic is not safe with them. I would never believe that a squirrel can be interested in garlic cloves if I hadn’t seen with my own eyes how a squirrel hurries up a tree with a freshly dug-out clove in his teeth.
I suspect that at least some odd grasses, bushes, and trees that grow all by themselves are actually squirrels’ work. We never planted any of that, and nothing similar grows nearby. It has to come from what squirrels hide around the patio.