Mint- Peppermint, Mentha Piperita(300 Seeds) Grow Indoors or Outdoor-organic ! by wbut2023 300 Seeds MINT- Peppermint,Mentha Piperita Grow indoors or outdoor-Organic ! There are several different types of mint: spearmint, bergamot, applemint, and Bowles mint; but Peppermint is generally the most wide spread in terms of usage. Peppermint seeds are easy to grow and the mature herb plant is pretty easy to identify by its dark green to purplish leaves. This herb typically grows around 24 inches tall or more, and consists of purplish, square stems and oblong purplish leaves with pointed tips, distinct veins, and toothed edges. The Peppermint herb plant has small pink, white, or purple flowers at the end of each stem from July to September. It is wonderfully fragrant and provides a cool, fresh scent that is so familiar in the summertime.