Cilantro is an herb often used in Mexican recipes. It is known as Coriander and Chinese Parsley, also. Its leaves are referred to as cilantro, while its seeds are called coriander. Cilantro takes only about two weeks or so to germinate and is fast growing. In Phoenix, the cool growing season runs from September through April. It grows well in moist soil so water regularly. Select an area of soil that receives sun in the morning, but some shade in the afternoon.