Is shenandoah switch grass an annual or perrenial?

Shenandoah switchgrass (Panicum virgatum 'Shenandoah') is a perennial grass. It typically grows in clumps and can thrive in a variety of soil types and conditions. This grass is known for its ornamental value, featuring beautiful red-tinted foliage in the fall. As a perennial, it returns year after year, making it a popular choice for landscaping and naturalizing.