Fill a perforated gardening container with your choice of growing medium. Potting mixes and peat moss are better choices than soil that may contain weed seeds and soil-borne diseases. Leave 1/2 to 1 inch at the top of the container to prevent water from spilling from the container.
Add small amounts of fertilizer to the soil before planting to promote growth and encourage plants to produce better flavor and aroma. Use a low-grade chemical fertilizer or add nutrient-rich compost and manure to your potting mix.
Plant seeds of medicinal herbs such as lavender, chamomile, cinnamon and horsetail. Follow directions included on seed packaging for optimal spacing and seed planting depth.
Place the seeded containers outdoors or indoors on a window sill. Choose a sunny, south or west-facing window or outdoor location to satisfy the high sunlight requirements of most herbs.
Water the container herb garden as often as necessary to keep the surface soil moist, with a feel similar to a wrung-out sponge. Container gardens will drain water quickly and may require watering more than once each day.