Perennials
Perennial plants live more than two years and, once established, bloom each year. Some die back to the ground in their off-season others retain foliage year around. In the low desert, perennial off-seasons are usually during the intense heat of summer and the colder winter months. You may notice that many plants that are considered perennials in other parts of the world are listed as annuals in the attached chart. That's because they don't receive enough winter coldness for dormancy or can't...
