|Blue Palo Verde (Parkinsonia florida)|
When people think of the Sonoran desert, hillsides studded with saguaro cactus and cholla often come to mind. But interspersed between the cactus, you will find the iconic palo verde trees with their beautiful green trunks and branches.
|‘Desert Museum’ Palo Verde (Parkinsonia hybrid ‘Desert Museum’)|
Palo verde trees act as a “nurse plant” to young saguaro cacti by protecting them from the cold in the winter and from the intense sun in the summer. Beautiful, yellow flowers are the product in the spring.
Another species of palo verde that is prevalent in the landscape are called palo brea (Parkinsonia praecox), formerly (Cercidium praecox). They have a dusty green trunk and branches that twist and turn. Their cold hardiness range is around 15 to 20 degrees F.