If you see mint planted in a garden, chances are it'll be in its own container. That's because mint doesn't make for a good companion plant - in fact, it's so invasive that it can quickly spread through a planter or flowerbed, smothering out your other plants.
If you're planning an edible garden of any kind, whether you're focusing on an outdoor herb garden or even a cocktail garden, you might want to combine all your herbs in one place, whether that's a bed, a raised planter or even a window box. After all, unless you're planning on container gardening, extra potted plants will just add clutter to your outdoor space.
