Mint, another hardy herb, is ridiculously easy to grow. In fact, mint does so well outdoors that the biggest challenge associated with it is keeping the plant from taking over your whole garden. But before we get into that, let’s talk logistics. Mint needs damp soil with good drainage, and it tends to do best when kept in an area that receives a moderate amount of shade during the day.
Under favorable conditions, the herb’s specialized stems—known as “runners”—shoot out in all directions. Left unchecked, the runners will devour every inch of available real estate, sometimes conquering entire lawns in the process. For this reason, many people grow their outdoor mints in clay pots from which the roots can’t escape. But if you want to put yours in a multi-species garden, plant it on the inside of a long, tubular container with an open bottom and thick walls. An 18-inch metal stove pipe buried vertically with its uppermost inch poking out above the surface would be perfect. Patio edges and driveways can also be effective root barriers.