Chamomile can be grown in Tucson, Arizona, and is considered a cool-season annual herb:
When to plant
Sow seeds in early spring or fall when temperatures are above 55°F.
Where to plant
Chamomile prefers full sun and well-drained soil. If you have caliche soil, you can grow chamomile in pots with a cactus soil mix.
How to care for
Water regularly after planting and keep weed free. Chamomile plants are hardy and don’t need winter cover.
Types of chamomile
German chamomile can be grown in the winter, but needs to be replanted each year because it dies in the heat. Roman chamomile is best planted in the spring and uses more water than native plants.
German chamomile can be grown very easily in the cooler months of winter, while the Roman chamomile is best planted in spring. Both need six to eight hours of sunlight per day. Like many herbs, they do best in well drained soil. Thus if you have caliche soils, consider growing them in pots with a cactus soil mix