Peppermint and spearmint are the most commonly available, and one source suggests that spearmint is the one most often found in grocery stores. One way to check: peppermint is 40 percent menthol, while spearmint is less than 1 percent menthol. This means that peppermint will have a more intense flavor and possibly an aftertaste, while spearmint will be milder tasting.
If you are growing mint in a container, it will do better outdoors in summer. See above for more specific info.
Peppermint and spearmint are the most commonly available, and one source suggests that spearmint is the one most often found in grocery stores. One way to check: peppermint is 40 percent menthol, while spearmint is less than 1 percent menthol. This means that peppermint will have a more intense flavor and possibly an aftertaste, while spearmint will be milder tasting.
If you are growing mint in a container, it will do better outdoors in summer. See above for more specific info.