You can grow herbs in either pots or the ground. As some herbs are invasive such as mint, growing them in a pot gives you a measure of control and can keep them from moving into the growing space of other plants. Growing herbs in pots also makes it easier to move them around for maximum sunshine and easier watering.Some herbs, especially the mediterranean ones need very free draining soil and lots of sun so will often do better grown in a pot where you can control their environment more easily.