(Switch Grass, Ornamental Grass) Prairie Winds® 'October Sky' Panicum (Panicum virgatum), also known as switchgrass, is a striking ornamental grass that brings texture, height, and late-season interest to sunny landscapes. Hardy in USDA zones 4–9, this native North American grass grows 4 ½ –5 feet tall and spreads about 3 feet wide, forming a strong, upright clump that holds its shape even in harsh weather. In late summer to early fall, Prairie Winds® 'October Sky' produces airy, mauve-pink flower panicles that float gracefully above its blue-green foliage. These flowers mature into tan seed heads that persist through fall and into winter, adding movement and seasonal interest. The foliage turns a golden-yellow in autumn, offering a brilliant seasonal display. Best grown in full sun, this grass thrives in a wide range of well-drained soils, including clay, loam, or sandy types. It is drought tolerant once established and requires minimal care. Prairie Winds® 'October Sky' is deer resistant and makes an excellent choice for naturalistic plantings, borders, or prairie-style gardens. The long-lasting blooms and seed heads ensure a strong presence in the garden from late summer through winter. Prairie Winds® 'October Sky' Panicum is a Proven Winners® Perennial.