filler for native perennial border
I'm trying to find a grass or groundcover that will fill in around native perennial flowers in a border planting. There are two borders, one raised with drier soil, the other moist. The raised bed has a mix of goldenrods, anise hyssop, butterflyweed, coneflowers, etc. The other bed has NE asters, swamp milkweed, meadow blazing star.
I'm not trying for a prairie, but I want to make the borders look full and cut down on the self-seeding.