Crimson Scabious (Knautia macedonia), sometimes called Field Scabious, features unusual 1-2-inch-wide pincushiony flowers often described as claret or burgundy in color. Praised as a superb border plant, its open foliage gives it a see-through quality that many gardeners love. It likes full sun or partial shade and grows to 4 feet tall and as wide. Perennial in the Ozarks, it blooms from summer into early winter. Bonus: it's also very attractive to butterflies.