Moorten Botanical Garden and Cactarium, Desert botanical garden in Palm Springs, California.

Moorten Botanical Garden and Cactarium is a one-acre garden in Palm Springs holding about 3,000 desert plants, arranged by geographic origin: Arizona, Baja California, California, the Colorado Plateau, Sonora, South Africa, South America and Texas. Outdoor beds contain agaves, Boojum trees, crested Cereus, a two-story Pachypodium and aloes; the Cactarium greenhouse holds caudiciform succulents, Ferocactus and two Welwitschia mirabilis from Namibia.

The garden was founded in 1939 by Patricia and Chester Moorten, a former silent film comedian who had a passion for desert plants. The couple collected specimens from Mexico and Guatemala, building one of the early private collections of its kind.

The Moorten residence, called Cactus Castle, was built in Mediterranean style by photographer Stephen H. Willard (1894–1966). The Moortens received Golden Palm Stars on the Palm Springs Walk of Stars for their contributions to the community. The garden is family-owned and still run by the Moorten family.

The garden is easy to walk through because the plants are spread across a small, flat area that you can cover at a leisurely pace. It is best to visit in the early morning during warm weather, as there is little shade and the sun can be intense.

Chester "Cactus Slim" Moorten, one of the original Keystone Cops, performed in Two Flaming Youths (1927) and The Sideshow (1928) before founding the garden with Patricia. The couple received Golden Palm Stars on the Palm Springs Walk of Stars for their contribution to the community.