Torpedo Grass

Species: Panicum repens

weed identification

common name
Torpedo Grass

Torpedo grass is a tall grass with tough stems which can reach up to one metre tall. The stems are green, flat and sometimes have flowers. The leaves sometimes have a white and waxy covering on the underside. The emergent plant has creeping underground stems (rhizomes).The grass can form extensive dominant mats. Torpedo grass can tolerate saline conditions.


It prefers warm environments, wet habitats and commonly grows in sandy soils. It is tolerant to drought and temporarily flooded conditions.

native or exotic?

Primarily by underground stem fragments (rhizomes), viable seeds are rarely produced.


Underground stems fragments (rhizomes) are dispersed by water, animals and vehicles.


Torpedo grass can be used for erosion control and provide bank stabilisation.

What does Torpedo Grass look like?

Use these images below to help you decide whether you are dealing with Torpedo Grass.

Disadvantages of Torpedo Grass

Torpedo grass can grow quickly and if the infestation is too dense it can have negative impacts on the water body.

  • Potential to dominant water bodies and displace other native water plants
  • Prevents regeneration of more desirable plants
  • Reduces critical food and habitat for fish and other aquatic animals
  • Potential to obstruct water flow and block pumps
  • Restrict water-based recreational activities


AQ200 Aquatic Herbicide + Wetting Agent – Chemical Herbicide designed to kill emergent weeds quickly. Use on mild to severe infestations.

Aquatic Weed Rake and Razor Combo – DIY physical removal. Ideal for mild infestations, sensitive water bodies or to aid herbicide treatment.

Aquatic Harvesting – Large amphibious machine that cuts and clears emergent aquatic weeds. Book this service for severe infestations or for larger water bodies.

prevention options

Aerating Fountains – Reduces the severity and likelihood of aquatic weed infestations. Use in any body of water.