Known hazards of Mentha asiatica: Although no records of toxicity have been seen for this species, large quantities of some members of this genus, especially when taken in the form of the extracted essential oil, can cause abortions so some caution is advised. Plant information taken from the Plants For A Future.
Mentha canadensis l. Mentha canadensis (syn. M. arvensis var. canadensis) is a species of mint commonly known as American wild mint, native to North America (from Northwest Territories to central Mexico), or known as bakha, East Asian wild mint, or Japanese Mint (M. arvensis var. piperascens) in eastern Asia (Siberia to Java) and the Northern Territory of Australia.
Mentha requienii, commonly called Corsican mint or creeping mint, is a miniature mat-forming plant that typically grows to only 1/2" to 1" tall but spreads by thread-like stems which creep along the ground rooting as they go to 12" wide or more to form a dense flat diminutive ground cover.
There are two plants called pennyroyal. One is the European pennyroyal (Mentha pulegium), which is a member of the mint family. The other is the American pennyroyal from an unrelated genus, Hedeoma pulegoides. American Pennyroyal Plant. Either variety of pennyroyal has a fresh, minty scent but American pennyroyal is not in the mint family.
Care of Spearmint. As with most types of mint, the care of spearmint is easy. Mint in the garden should be mulched annually to keep the roots cool and moist. Potted mint does best when fertilized monthly during the growing season with a liquid fertilizer. Divide plants every two years to keep them healthy.
The scent of this wild mint growing in a field is often so strong you can smell it long before you can see it. Keep reading for field mint information and learn about wild mint growing in your garden. Field Mint Information. Native Americans used to drink field mint tea as a remedy for colds, and it’s still used today for teas and flavorings for food.