Though there is a native Blue Flax, this one is probably an escaped domestic. And it has been successful. These shots were taken beneath wind towers below the Nebraska border and any domestic garden was miles away. White and blue blossoms on the same plant may have something to do with the age of the blossom. A fellow from the Utah Native Plant Society emailed to inform me that I was correct (finally) and that the flax pictured below are Linum perenne. I believe these are included in the regeneration seeds thrown along highways to heal scars and are also one of the seeds in the national Pollinator Project to help insects. Another of those plants is the Indian Blanket or Fire Wheel, found elsewhere on this site.