Cilantro (Coriandrum sativum) is a great addition to any herb garden. Not only is it a relatively easy plant to grow, but it actually boasts two cooking uses for the price of one. The name cilantro refers to the plant's thin, green stems and flat, lacy leaves, which are best eaten fresh. Its other common name, coriander, refers to the seeds, which are used as a common cooking spice, especially in Indian, Middle Eastern, and Asian cuisines. Cilantro is best planted in the early spring but also can be started in fall. It grows quickly, often yielding its first harvest of leaves within 30 days. Its seeds will be ready for harvest closer to three months from planting.