Determine your pot size. Grow single plants in 6-inch containers. Use 12- to 16-inch, 5-gallon and larger planters for three to six plants.
Combine a slow-release balanced fertilizer with the potting soil. Use the lowest amount of fertilizer recommended on the package label for your pot size.
Fill the pot with the prepared soil to within 1 inch of the top. Water the soil so it's moist and add more soil if the water causes the level to settle.
Plant the herbs in the pots at the same depth they were at in their seedling pots. Space multiple plants at an equal distance from each other in the planter.
Set the pots in an area that receives at least six hours of sunlight. Choose a location that is easy to access for harvesting and watering.
Water the herbs every one to two days, as potted plants dry out quickly when grown outdoors. Most herbs require watering when the top 2 to 3 inches of soil feels dry. Smaller pots require more frequent watering than large pots.
Apply a soluble fertilizer two months after planting, at the lowest recommended package rate. Reapply the fertilizer monthly until the end of the growing season.