Remove any existing plant material from the muhly grass bed. Dig the plants roots and all or spray them with a broad-spectrum systemic herbicide. If you use herbicide, consult the manufacturer's label for any warnings on the amount of time you must wait before replanting.
Loosen the top 6 inches of the soil with a shovel or garden trowel. Keep digging through the soil until it is an even consistency. Break up any clumps and remove any rocks, roots or other debris that you uncover along the way.
Smooth the soil flat with a rake.
Place each seed on the surface of the soil and press it down to ensure good soil contact. Keep each seed at least 2 feet away from its neighbor. Consider creating groupings or drifts to create big pops of color.
Cover each seed with 1/4 inch of soil and pat the soil down with your hands.
Water the seed bed to moisten the top inch of the soil. Continue providing the bed and seedlings with 1 inch of water per week for the best growth. However, muhly is quite drought tolerant. Once the seedlings sprout and get growing, they can survive on the annual rainfall in your area making them great for xeriscape gardens or areas where water conservation is an issue.