Invasive Buffelgrass burns hotter than native grasses, leading to wildfires that damage the Sonoran Desert's iconic Saguaro Cactus. During the summer of 2020, the Bighorn Fire burned for a couple of months in the Santa Catalina Mountains north of Tucson, descending through 4500 foot elevation into the foothills that defines the upper limit of the Saguaro's habitat (and threatening our own home, keeping us on evacuation alert for several weeks.