Cilantro grows well in the desert in the cool season garden.
Say "cilantro" here in the Southwest, and most folks think of salsa. And while cilantro can get along with the heat of chilies in salsa, it quickly dies with the heat of a summer day. Therefore you will want to grow this herb in the cool winter months – like right now.
Planting and Care.
Cilantro is a cool season crop, and is best planted in our area in September and October. It should grow through the winter and into April before starting to flower (called bolting). Leaves are more flavorful before bolting. Once bolting begins, reconcile yourself to the fact that you will soon have ample coriander seed, plus seed to plant next year. Harvest the seed if you want it, because otherwise the lesser goldfinch, quail, and doves will clean it all up.
Light. Cilantro does best with six or more hours of winter sun.
Temperature. Plants can take frost to around 20oF, so cover if a harder frost is expected.
Water.
Let cilantro dry a little more between watering once the plants get larger. Some people believe this makes their flavors stronger.
Fertilizer. Cilantro gets very lush and full with some fertilizer. However, if you amended your soil at the start you don't need to add fertilizer. Avoid fertilizing anything when frosts are a possibility.
Pollinators.
Cilantro could be justified as a garden plant if only for the job it
does in attracting pollinators to the garden. Bees enjoy the
nectar-rich flowers and the resulting coriander honey is prized for
its flavor.
Harvest and Use.