We mainly use the herbs fresh. Our oregano has spread, but it’s not to excess. The same with the cilantro, which reseeds itself twice a year, and the parsley in the front flowerbeds. If it gets carried away, we just pull some up!
I had a great crop of dill one year, but I haven’t had a success with it in I think four years. I have seeds again this year, but haven’t put them out yet. Two years ago, iirc, was the Thyme Explosion, but we’re down to a couple of plants now. The catnip is in the “experiment patch,” at least 20 feet from any other gardens, so if it takes off there, it can just colonize the lawn without mixing in the other herbs.
Funny how certain plants do better than others in what almost seems like cyclic (is that a word?) years.
Cat grass might be a better lawn cover than regular grass. I know the clover we have handles droughts better than the grass. Actually the oregano that has migrated into the lawn does better as a ground cover than the grass, lol.