Okay, about a month or so ago I bought a chocolate mint plant. After a few weeks it seemed like it was getting really weak..so i put it in the ground.Needless to say it has improved significantly in only two days

Now, there is alot of large tree roots running around where i planted it, i tried to break up what i could but i couldn't get all of them, will the tree roots end up killing the mint or will it just work around it?