If only those weeds can be consumed too by human, even if they grow there every months then it's okay. But for some who have garden or maybe a small farms taking care of those weeds for sure is a big hassle and need a lot of work too for them. Even at home they just grow everywhere. If you left it for long, snakes might create in a nest in there too. Anyways, hope you'll be able to harvest your chives soon without any problem ✨