Mint, from spearmint to peppermint, is a notorious spreader, with horizontal roots that will ruthlessly conquer the root systems of nearby plants if given the chance. It’s best to plant mint in its own pot, or plant it near good companion plants that can handle a bit of sprawl in the garden bed while benefiting from mint’s pest-repelling powers. Any plant that is affected by aphids will improve with mint growing in close proximity. Not just vegetables and fruits but also flowers like Roses, chrysanthemums, Dahlias, and hydrangeas to name but a few. It works to defer: Ants, Fleas, Mosquitoes, Flea Beetles, Cabbage White Butterflies, Aphids, Rodents, Earwigs, Mealy Bugs and Spider Mites.