How to get rid of torpedograss?

Torpedograss: A Persistent Warm-Season Weed

Torpedograss is one of Charlotte's most problematic warm-season perennial weeds, named for its torpedo-shaped seed heads. This aggressive grass species spreads through deep rhizomes and seed production, quickly taking over desirable turf areas and creating a coarse, rough lawn texture. Once established, torpedograss is exceptionally difficult to eliminate because its deep underground rhizomes survive most surface treatments and readily regenerate.

Control Strategies

Torpedograss control requires persistence and multiple approaches. Spot treatments with non-selective herbicides like glyphosate can suppress established patches, though repeated applications over months are necessary to exhaust rhizome reserves. Applications should be made during active growth in summer when the plant is most vulnerable. Fall applications are less effective since the plant is preparing for dormancy.

Step-by-Step Elimination Process

1. Initial Assessment: Identify all torpedograss patches in your lawn, noting their size and distribution to plan treatment strategy
2. Herbicide Application: Apply selective herbicides approved for warm-season turf, or non-selective glyphosate to isolated patches not adjacent to desirable grass
3. Repeated Treatments: Plan for 2-3 herbicide applications 2-3 weeks apart throughout summer to effectively deplete rhizomes
4. Soil Solarization (Optional): For severe infestations, cover problem areas with clear plastic for 4-6 weeks during hot summer months to heat-kill rhizomes
5. Reseeding and Recovery: After torpedograss is eliminated, overseed or plug with desirable turf to prevent reinfestation

Large torpedograss infestations may require professional intervention with specialized equipment and expertise. Contact Cornerstone Creations for evaluation and treatment recommendations.