I love this selection of Coneflower, Echinacea paradoxa x purpurea. Given the cultivar name, 'Paranoia,' this plant has strappy yellow petals that arch down from the central cone. I think it would look great planted with a native grass like Muhly Grass (Muhlenbergia capillaris).
Or you could plant a mass of these Coneflowers near a native Trumpet Honeysuckle Vine (Lonicera sempervirens) for a beautiful combination.
Unlike the invasive Japanese Honeysuckle, this vine behaves itself and nicely contributes to the local ecosystem. The rich red flowers attract the Ruby-Throated Hummingbird* and is a larval plant for the Spring Azure Butterfly.
Ozark Coneflower seems to be taller than Purple Coneflower (Echinacea purpurea), so plan accordingly. Parson's Nursery in Georgetown, South Carolina sells this selection (wholesale only).
*When I worked at Carolina Nurseries, we used to grow this plant by the hundreds (if not thousands). When they flowered, I would stand in the middle of the field and watch 30-50 hummigbirds at a time zoom from flower to flower and fight for territory. It was amazing to be that close to so many birds. They were so engrossed with the flowers that they didn't notice me there at all.