I just got over a MAJOR issue with my neighbor. The dorkhead keeps chopping at my hedges and bushes. This time he did something majorly damaging to the roots of my ligustrum trees, and I had to speak up. Got it (mostly) all straightened out. But I don't trust him to keep his hands off.
We live in townhomes that share one wall. The landscaping out front is half in front of my house, and half in front of his house. But I've lived her 21 years and have always taken care of all of it. He moves in 4 years ago, doesn't speak to anyone, and figures the plants on "his" side of the line are his to chop. Now, that's stupid! If there are four trees in front of our houses, all exactly the same size and shape and all lined up in a row, he shouldn't go trimming the two he thinks are "his." Especially not without knocking on the door and consulting ME!
That's the thimble-sized version. The whole story was really much larger and uglier.
Re the lilies - be sure to fertilize.