That said, I’m -1 on HOAs. I’ve heard far too many complaints and too few people happy with them to deal with one.
A couple months ago a coyote decided to poop on my front door. Obviously, it was sending a message, but I'm not sure what it was.
Certain types of invasive plans are noxious, outright poisonous, encourage hay fever, or just spread so fast that they can end up destroying neighbor's yards as well.
Plants don't obey property lines.
Edit: Unkempt yards can also be breeding ground for pests. From mosquitoes in still water to hoards of rats. Most people don't want to put up with those styles of annoyances that are trivially avoidable if everyone in the area cares just a little.
Rats come from having edible garbage available and fruit trees dropping fruit.
The most annoying things about neighbors are dogs that bark all day, and the leafblowers and lawnmowers.
You know weeds are only weeds if you don't want them, right? Everywhere else they're just wild plants.
