Grasses

Schizachyrium scoparium 'Prairie Blues'

Upright clumps of slender, flat, linear bluish green leaves. Purplish-bronze blooms. Tolerates black walnut. USDA 3-9

Pennisetum alopecuroides 'Piglet'

White blooms. Graceful, spreading clump. Deep green leaves. Tolerates black walnut, Dry & wet soils. USDA 5-9

Deschampsia cespitosa

Rich-green fronds have a dense, upright growth habit. White, puffy plumes in late summer. USDA 4-9