A couple of years ago in the fall I planted a mint plant (catnip maybe) on the slope in the very back of my yard. My back yard slopes down into a wooded area. We have lots of bugs and the mint was a way to help minimize the bugs a bit. Last year there was no sign of the plant. I thought that it may have died out in the very heavy snow that we had that winter. This spring it has come back with a vengeance. Somehow there is not much of the plant where I originally placed it but now it is in the middle of my back yard and it has migrated all the way to a cut our area in our front side yard. I admit that the cut out area (shared with a neighbor who basically trashed it) looks better with the mint (green foliage with purple flowers). I knew mint can quickly spread but I wasn't expecting it to jump 20 feet to the middle of the back yard and @ 100 feet to the front area. My guess is that some woodland creatures consumed the plant then made deposits around my yard - helping the plant spread so far. I actually don't mind the mint in the grass (scattered purple flowers in the grass) but I just don't want it taking over the grass completely in the back yard. I am willing to leave it in the cut out area because it's an improvement there. Looking for advice on how to keep the mint from over taking the grass in my back yard. Thanks.