Roseann Hanson May 11, 2009 Yellow: The color of early summer in the Sonoran Desert Roseann Hanson May 11, 2009 During April and May, the desert is awash with yellow.Hillsides glow, trees are laden with flowers. Bees rejoice.Mesquite blossomsPrickly pear cactus blossomsCoyote melons(Squirrel snack, coyote melon)