Even in May, it was over 100 degrees. This is the desert, after all. But May also means the desert is in bloom. We found Sabino Canyon unique and gorgeous in every way.    Sabino Canyon is in the Santa Catalina Mountains and has a unique landscape neither of us had ever experienced before. Saguaro Cactus, Palo Verde trees, Cholia and Prickly Pear Cactus are all over the canyon.   Stop first at the Visitors’ Center which is open every day from 8-4:30, except for Christmas and Thanksgiving. There, you can pick up trail maps, books and other information.                  THE TRAM SYSTEM   The Canyon has…