Apply a balanced fertilizer but avoid excessive use of nitrogen fertilizers. Consult the county Extension office for soil preparation, fertilization and other good garden cultural practices. Water as necessary during dry periods. Generally, about 1 inch of water is needed per week, if not supplied by natural rainfall. A mulch helps conserve soil moisture and reduces weed growth as well.
Mints prefer moist soil so they require more frequent watering.
Establishing the herb garden Establish annual and biennial herbs by planting seed directly in the garden or starting seeds indoors for later transplanting to the garden. Save seed produced by the herb plants for next year's crop, or obtain seed from your local garden center or seed catalog. To save your own seed, harvest the entire seedhead after it has dried on the plant. Then allow seeds to dry in a protected location that is cool and dry. After the seeds are thoroughly dry, thresh the seed from the heads and discard the trash.