Never any guarantees. Plant in containers if worried. I have 6 or seven types of mint. I keep them in different areas. Planting varieties too close can change them and they can cross. Changes their flavor. They will spread, and escape their beds. I don't mind. My lawn has chocolate mint in some areas, and beautiful patch of great pineapple mint near the septic. I like it wild and variable.. I love to mow. The smell is heavenly.. The only mint I cannot seem to grow is spearmint. Planted in 5 different locations....it dies on me in sun or part shade. I have plenty of rain in south Mississippi. I keep trying. I love a challenge.😊
