Palo Verde (Cercidium) - Its name translates to "green stick" and with one glance you can see the green color on its trunk and leafless branches.  In early Spring it bursts into bloom with bright yellow blossoms and for a short while has tiny leaves.  Good screening tree or for light shade. Very drought tolerant so plant in a dry area.

 The Saguaro grows very slowly -- perhaps an inch a year -- but to a great height, 15 to 50 feet. The largest plants, with more than 5 arms, are estimated to be 200 years old. An average old Saguaro would have 5 arms and be about 30 feet tall. This is my favorite Saguaro in our neighborhood.