Panicum virgatum 'Rotstrahlbusch' (commonly misspelled as Rostralbusch), also known as Red Ray Switch Grass, is a hardy, upright ornamental perennial grass celebrated for its dramatic, shifting colour palette and architectural structure. The German name translates to "red ray bush," highlighting its main feature: grayish-green blades that flush with red tips in early summer and transform into a vivid crimson and burgundy-red canvas by autumn.