Use succession planting
The key to a successfully growing cilantro is in succession planting. This means sowing seeds several times during the growing season. Sow cilantro seeds once a month, from Spring through late Summer. Depending on your climate, you can plant about 20 seeds each month from late April through August.
Prepare the soil
Prepare the soil for planting. Use a pitchfork to loosen.
Plant the seeds
Sprinkle the seeds across the prepared soil. Press them each about 1/2-inch into the soil.
Tranplant if needed
Cilantro plants will start to grow quickly. If they are growing too close together, transplant them to create space. Just be sure to do this on a rainy day and before the plants get too big.
Harvest as needed
Cilantro is ready for harvest when the plant gets full and bushy. Harvest stems and leaves as you need them. For best results, use scissors and cut all the leaves off, leaving only an inch or two of growth from the ground.
Harvest new growth
Cilantro will continue to produce leaves as many as four or five times after harvesting. Cilantro does have an eagerness to go to seed, especially in hot weather. You'll know when this happens by the elongated center of the plant that forms a flower stem. At this point the plant leaves tend to become bitter. You can cut off the flower stock, cut back the leaves and use what you can. But at this point you may be better off moving on to the next crop of cilantro.