Mexican Fencepost (Pachycereus Marginatus)
All Cacti are VERY low water use, evergreen, and low litter plants. Large cacti can make a great focal point in you Tucson Real Estate low water use landscape. My criteria for large cacti is and cactus over ten feet tall. Here are a few you could choose from.
- Saguaro (Carnegiea Gigantea) is a plant native to the Sonoran Desert and probably the best known and most identifiable cactus in Arizona. It can tolerate full reflected sunlight, is hardy to 18 degrees, and has long thorns. Saguaro grows columnar to about 20 feet tall by 10 feet across, has white showing blooms in the late spring, and the red fruits produced by this plant will attract birds. It is important to consider the mature size of this plant.
- Hildmann’s Cereus (Cereus Hildmannianus) is a plant native to eastern South America. It can tolerate full sunlight, is hardy to 24 degrees, and has medium thorns. Hildmann’s Cereus grows columnar to about 15 feet tall by 10 feet across and has white showy night blooms spring to summer. This plant is a fast-growing substitute for organ pipe cactus.
- Senita (Pachycereus Schottii) is a plant native to the Sonoran Desert. It can tolerate full reflected sunlight, is hardy to 18 degrees, and has medium thorns. Senita grows columnar to about 10 feet tall by 10 feet across and has pink night blooms in late spring to early summer that will appear on the “furry” top regions of the stems.
- Totem Pole (Lophocereus Schottii) is a plant native to Baja California. It can tolerate full reflected sunlight, is hardy to 20 degrees, and has no thorns. Totem Pole grows columnar to about 10 feet tall by 10 feet across and has pink blooms in late spring to summer. This plant is particularly interesting for its sculptural quality.
- Blue Myrtle Cactus (Myrtillocactus Geometrizans) is a plant native to southern Mexico. It can tolerate full sun, is hardy to 24 degrees, and has medium thorns. Blue Myrtle Cactus grows upright to about 15 feet tall by 10 feet across and has small greenish white blooms in spring followed by purple fruits. This plant can become treelike with age.
- Indian Fig (Opuntia Ficus-Indica) is a horticultural selection that can tolerate full sun, is hardy to 22 degrees, and typically has no thorns. It grows shrublike or treelike to about 12 feet tall by 18 feet across and has yellow to orange showy blooms in the spring followed by showy fruits. Indian Fig has treelike sculptural qualities and space should be a consideration.
- Giant Prickly Pear (Opuntia Robusta) is a plant native to central Mexico. It can tolerate full reflected sunlight, is hardy to 15 degrees, and has medium thorns. Giant Prickly Pear grows shrublike to about 10 feet tall by 10 feet across and has yellow flowers in spring followed by large red fruit. The pads of this plant can grow to one foot or more across.
- Mexican Fencepost (Pachycereus Marginatus) is a plant native to southern Mexico. It can tolerate full reflected sunlight, is hardy to 20 degrees, and has medium thorns. Mexican Fencepost grows columnar to about 10 feet tall by 6 feet across and has pink flowers in spring. This plant make a bold, dramatic accent and also does well in containers.
- Organ Pipe (Stenocereus Thurberi) is a plant native to the Sonoran Desert. It can tolerate full reflected sunlight, is hardy to 22 degrees, and has medium thorns. Organ Pipe grows columnar to about 10 feet tall by 10 feet across ahd has pale pink night blooms from spring to summer. This plant makes a striking focal point.
- Cardon Grande (Trichocereus Terscheckii) is a plant native to Argentina. It can tolerate full sun, is hardy to 10 degrees, and has medium thorns. Cardon Grande grows treelike to about 15 feet tall by 8 feet across and has showy white flowers in the spring. This plant is similar to Saguaro but grows faster and is smaller at maturity.
These plants can be a great choice for your Tucson Real Estate’s low water use landscape. Add your favorite large cacti in the comments and be sure to let me know if you see anything that you would describe differently.










