Spearmint leaves can be used fresh, dried, or frozen. They can also be preserved in salt, sugar, sugar syrup, alcohol, or oil. Spearmint has been used traditionally as medicines for minor ailments such as fevers, and digestive disorders. There is research on spearmint extracts in the treatment of gout and as an antiemetic. 

Spearmint leaves are infused in water to make spearmint tea. Spearmint is an ingredient of Maghrebi mint tea. Grown in the mountainous regions of Morocco, this variety of mint possesses a clear, pungent, but mild aroma. Spearmint is an ingredient in several mixed drinks, such as the mojito and mint julep. Sweet tea, iced and flavored with spearmint, is a summer tradition in the Southern United States.

Spearmint essential oil has had success as a larvicide against mosquitoes. Using spearmint as a larvicide would be a greener alternative to synthetic insecticides due to their toxicity and negative affect to the environment.

Used as a fumigant, spearmint essential oil is an effective insecticide against adult moths.

Growing instructions:

Fill a flower pot with high quality soil and water it thoroughly. You should leave about an inch (2.54 cm) of space at the top of the pot. Add enough water to make the soil very moist, but don’t add too much water, because you don’t want the soil to be soggy. Even if you plan to plant your tulsi in an outdoor area, it's best to start growing it indoors before transferring to an outdoor bed. 

Sow the seeds ¼ inch (0.64 cm) beneath the soil. Because tulsi seeds are so small simply sprinkle the seeds on top of the soil, then gently press them down into the surface using your fingers or a small tamper.

Keep the soil moist until the seeds germinate. The seeds will begin to grow in about 1-2 weeks. Because the seeds are so delicate, try using a spray bottle to lightly mist the surface of the soil. If you are pouring water into the pot, do so slowly and carefully so you don’t disrupt the seeds. Covering the top of the flower pot with plastic wrap will help seal in moisture, but you will still need to check the soil and add more water if needed.