How to Grow Knotgrass


Knot grass is a warm season grass native to the United States and typically found in meadows and marshes. It is primarily used for forage in pastures and hay production. Highly palatable to livestock and wildlife, knot grass is recommended in the restoration of marshes and wetlands. When grown under optimal conditions, knotgrass will grow up to one foot.

Step 1

Plant knotgrass seeds in full sun and moist, well-drained soils. Growth begins in early March and will last until winter's first frost.

Step 2

Clear the planting area of weeds and other plants that will affect its the growth and development. Plant the seeds 1/4 to 1/2 inch deep in the ground with a no-till drill. Ideal seeding rate is 30 seeds per square foot.

Step 3

Create a seedbed by raking over the soil and removing all stones and rocks. Tread lightly over the soil for a firm seedbed.

Step 4

Water the seeds once a week after planting; they prefer moist and well-drained soil. Spread mulch around the base of the plant to help retain moisture.

Step 5

Treat knotgrass with herbicide to reduce problems. Check with your local extension office for recommended doses. Lightly graze and allow a two-and-a-half to three-month resting period between grazing.

Things You'll Need

  • Seedlings
  • Mulch
  • Herbicide


  • United States Department of Agriculture
Keywords: growing knotgrass, culitivating knotgrass, establishing knotgrass

About this Author

Callie Barber has been writing professionally since 2002. Barber's love for design and writing inspired her to create Design Your Revolution, a blog that shares creative and affordable ways to decorate indoor and outdoor living environments. Her articles have appeared on and Barber holds a Bachelors of Arts in international studies from the University of North Carolina.