Courtesy of: Growing Organic, Eating Organic
Although it can be invasive in gardens, it also does well in potted in containers. Mint needs humid soil and only moderate sunshine. It will grow in, out and around all garden plants; this herb is tenacious and dedicated to spreading through the garden. The trick is to keeping it "controlled" is to continuously cut it back and restrict growth. Otherwise this herb can spread like wild fire through your garden in the form of strong willed runners.
Did you know that Mint is a fantastic perennial herb?