Panicum virgatum 'Thundercloud' (Poaceae)
A big and bodacious switchgrass, up to 8' tall with open airy panicles late summer into fall. A cross between Panicum 'Cloud Nine' and 'Northwind', its blue-green foliage stays remarkably upright throughout the season, even through wind and rain. Makes a terrific screening plant due to its large size and continuing winter presence.
Bloom period: early-fall
Container size: Qt.