How do I control peppermint that has already gone crazy?

Mint really can take over. I just tore all mine out and re-planted in a pot. I'll have to buy new plants every year but glad it is gone from flower bed.

Cut all the mint very short. Dig up what you can - you'll have to go pretty deep. Then cover area with black plastic - two layers thick, to prevent sunlight penetrating. Hope for the best.

I had this same problem once. It has to be ripped out and RoundUp type product used. I plant In several pots on my deck, because I use a lot of mint. It overwinters fine outside in GA.

My small mint plant really took off as well. I dug it up, as best I could, that was over 5 years ago, and I still see mint growing in my garden, which is now mulch covered and neighbors yard. When I see it, I try to dig it out. Once the roots develop, it's hard to remove. My mint is now in pots.

Mint takes over as you have found out. You can either dig it out by hand, or smother it with newspaper, cardboard, landscape fabric then cover with mulch. No sun = no grow! 🌱

I concur with others, mint is an aggressive grower that's difficult to remove. I never grow mint in the ground. I love the variety of mint but I put it in pots on a shelf (not on the ground because the roots can spread through the hole in the bottom of the planter). Just an interesting note: plants in the mint family have square stems (so do some other types of plants). http://homeguides.sfgate.com/plants-square-stems-65980.html

i totally agree with keep it contained in a pot and you can love them,enjoy instead of disliking them because they are so invasive.

Propagate into pots and share with friends for gifts.