I put my mint up in a bucket without a bottem. Keeps it wel at bay.
At first I did not let it grow this way and then it ran meters away. I just dug it up and it made good compost.
About oregano and mint. All mint starts with Mentha..... But oregano with Oreganum.....
So in my opinion we're talking about 2 different families. I agree that they are both herbs.