The stem of spearmint is longer, there is no hair on it, the color is mostly green, and there are leaf grooves and stripes, the undeveloped branches grow close to the ground.
The stem of peppermint is shorter, there are pits on it, there are many hairs distributed, and there are many branches.
There is no petiole in the leaves of spearmint. The shape is oval, oblong or lanceolate. The front of the leaves is sharp. When they reach the base, they are a little round. The edges of the leaves are serrated. The color is green on the top and gray green on the bottom.
Peppermint leaves are oblong lanceolate, and some soft hair.
The flower of spearmint grows on the stem or branches, and its color is purple or white.
The flower of mint is smaller, its color is purple
