I think I let the other variegated indigenous vegetation overtake it for a little too long. Whatever spiky leafy things we get here are even more aggressive than mint, apparently.
What kind of climate do you live in? I live in Sweden, I have several types of mint in the garden and it's a constant hassle because they overtake and smother absolutely everything else.
Midwest US, so I guess that's some sort of continental temperate? I'm admittedly not the most diligent gardener, I just bought it to cook with and it came with the dirt attached to plant it.