Sow the muhly grass seeds on the surface of a quality seed starting soilless mix. Although it might be tempting to use standard potting soil or bargain-store mixes, a higher quality mix protects the seeds and seedlings from fungal pathogens that may kill them. Keep the mix moist at all times during germination.
Cover the seed germination container with plastic wrap and place it in the refrigerator or outdoors, if the temperature remains between 24 and 39 degrees Fahrenheit. The muhly grass seeds must remain at this temperature for 12 weeks.
Remove the plastic wrap from the germinating container and place the container on a heat mat set to 68 degrees Fahrenheit. The seeds need bright but indirect sunlight. Look for the grass to sprout within two weeks.