Both lemon balm and lemon mint have the potential to become invasive. Lemon balm spreads by underground runners. Dig up the plant every few years and divide its roots, and keep its above-ground portions clipped back. Keep lemon mint or lemon balm in a container if spreading runners are a concern.

Does lemon mint spread?

Crushed lemon mint leaves and flowers give off a pleasant, lemony fragrance. Plant size: Mature lemon balm plants grow 12-30″ high with a spread of about 7″ to 12″. Planting location: Choose a spot in full sun to partial shade. Lemon mint does well in garden margins, or anywhere it’s likely to be neglected.

Which mint plants are invasive?

• All Mints, including Peppermint and Spearmint.
• Pennyroyal, a member of the mint family.
• Comfrey.
• Bee Balm.
• Lemon Balm.