The Monarch Butterfly Exhibit is open usually from the end of September until mid-November. There is an additional fee to enter Mariposa Monarca, and you should get that ticket at the entrance when you enter the Garden.
Here is a map and directions to the Desert Botanical Garden. For specific dates and hours that you can visit the monarch butterflies, visit the Desert Botanical Garden online.
Monarch Butterfly Factoid: In 1989 legislation was introduced to name the Monarch butterfly was as the national insect of the United States of America. Congress did not pass that law. The U.S. does not have a national insect at this time.
