Cilantro is a fast-growing herb that many cooks enjoy using in savory, spicy dishes. Because cilantro has a long taproot, it needs extensive root room to grow. If you wish to grow cilantro in a container, choose a deep 5-gallon bucket with a drainage hole in the bottom. The height of this kind of bucket makes it ideal for growing cilantro because it provides ample room for growth. Whether you harvest the leaves of this herb as tasty cilantro or you decide to allow it to bloom for coriander, you can enjoy a culinary harvest from growing cilantro.
Fill the 5-gallon bucket with potting soil.
Plant the cilantro seed on the top of the potting soil. Spacing is not important because you will thin the seedlings later. Cover the seeds with ½ inch of potting soil.
Spray the surface of the potting soil with water to moisten the soil and to water the cilantro seeds lightly.
Place the 5-gallon bucket in a sunny location where the temperature is at least 60 degrees Fahrenheit.
Keep the soil surface evenly moist at all times (both during germination and after). The cilantro seeds should germinate in two weeks.
Thin the cilantro seedlings by pulling up the weakest seedlings when they are approximately 4 inches tall. Make the final spacing between seedlings approximately 2 inches.
Use scissors to harvest the cilantro leaves when the plants are approximately 6 inches tall. Trim the stems off just above the soil. Do not harvest all of the cilantro at once to keep the cilantro plants growing. Clip only a few stems at a time, and continue clipping once or twice per week.