Garden or Mackerel Mint.

Mentha spicata. Mint Family. July - Sept.

Found in wet places. Eastern half of United States and Canada. Naturalized from Europe.

Flowers

Purplish, variable in depth of color, in narrow, acute, usually interrupted terminal spikes.

Leaves

Aromatic, opposite, narrowly oblong, acute, sharply toothed, stemless or short-stemmed.

Spearmint.

Peppermint

M. piperita. Flowers purplish, in dense or interrupted, blunt, terminal spikes. Leaves egg-shaped, smooth, toothed, acute, very pungent tasting. Plant stem purplish, 18 - 36 inches high. Naturalized from Europe.

Peppermint.