Choose containers that have drainage holes in the bottom. Most fragrant herbs don't tolerate their roots standing in water.
Use a light potting mix or add perlite to regular potting soil. Equal parts of soil and perlite is a light mixture that drains quickly.
Place the potted herbs in a window that receives at least six hours of sun per day. If this isn't possible, place the herbs 6 inches beneath grow lights for 14 hours a day.
Keep the temperature between 65 and 70 degrees Fahrenheit in the daytime, and 55 to 60 F at night.
Keep the fragrant herbs out of drafts and away from heater vents.
Rotate the pots frequently to give all sides of the plant a turn in the sunshine.
Water the fragrant herbs when a finger poked 1 inch into the soil comes out dry. Drench the soil, and then allow the top inch to dry out again before watering.
Fertilize your herbs every two weeks with an all-purpose, water-soluble fertilizer. Dilute the fertilizer to 1/4 the recommendation on the label.