Cilantro is a delicious herb that is easy to grow if you keep it happy. As a rule, it likes cooler climates, and will start to become bitter and send up flowers if ambient temperatures reach above 75 degrees Fahrenheit. At this point, it will no longer be very good to use in your cooking. It is for this reason that many cilantro fans prefer to keep planting new crops every week to ensure that they have a continuous supply.
Consider how and where you'll be planting your cilantro. Cilantro prefers full sun, or at least mostly sunny areas with very little shade. It can be planted directly in your garden while the weather is cool but the ground is soft enough to cultivate, or it can be planted in pots. If you will be planting your cilantro directly in your garden, proceed to step 2. If you will be planting it in pots, proceed to step 3.
Scatter your seeds over your intended patch of garden. If you want to be precise, you can, but it is fine to scatter them freely as well. Cover them with a thin layer of topsoil, no more than 1/4" thick. Proceed to step 4.
Put potting soil in your pot. Sprinkle cilantro seeds over the top. Do not worry about spacing at this time. Some of the seeds will not sprout, and you can thin out or transplant any you would like after they have started growing. Sprinkle a little more potting soil over the tops of the seeds, but do not cover them by more than 1/4".
Water your newly planted cilantro. Do not overwater, as you do not want to wash them away. Simply dampening the dirt is fine for the first watering.