It was by an unmaintained strip of lilacs that acted as a property fence. Definitely had some invasive weeds but I suspect not watering them every day like the rest of my backyard killed them. I did need to dig up some Chinese elm saplings a few times, but I’ve had to do that on the rest of my property too

I wonder if it’s location dependant? I threw some native wildflower seeds in half of my backyard just before winter set in and it grew into a mini meadow the next year without any further input from me. I didn’t even water it