Always keep your mints ( all ) in pots and keep on cement to prevent root runners from sneaking out and taking over. Every year it is a very good idea to cut back in winter and then in spring take out of pot and cut up making new pots. Also watch out for runners sneaking into new territory. Round up is good if they get out of control on open land but you have to do a few treatments.
They are all worth growing! Vicki
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