Hailing from the rugged slopes of North American mountain ranges, including the Rockies and the Sierra Nevada, Physaria Alpina thrives in high-altitude environments, where it withstands fierce winds, icy winters, and scorching summers with unwavering resilience. A true alpine species, this will need excellent drainage if you are in a wet climate. Loads of yellow flowers followed by interesting seed pods, a good trough candidate, or crevice garden standout with it’s silver grey foliage.