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Article: Johnson Grass

Johnson Grass

Common Name

Johnson grass, Aleppo, Aleppo grass, Aleppo milletgrass, Arabian millet, Meansgrass, Cuba grass, Maidencane, Egyptian grass, Evergreen millet, False Guinea grass

Scientific Name

Sorghum halepense





Seasons of Growth


Key Distinguishing Feature

Robust grass with tall flower spikes

• Growth Form: Johnson Grass is a tall, robust grass species that can reach heights of up to 2-3 meters (6.5-10 feet). It forms dense clumps.

• Leaves: The leaves are large, lance-shaped, and usually have a prominent midrib. They may have a purplish or reddish midrib.

• Flowers: The flowers are borne in a terminal panicle (branched cluster) and are typically purplish or reddish in colour.

• Roots: Johnson Grass has a robust, rhizomatous root system, which allows it to spread and form new plants.

• Habitat: Johnson Grass is commonly found in fields, pastures, roadsides, and disturbed areas. It is native to the Mediterranean region but has naturalized in other regions, including North America.


Ecological Impact:

• Johnson Grass is considered invasive in many regions outside its native range, including Australia. It can form dense stands, outcompeting native vegetation and reducing biodiversity.

• It can also be a problem in agriculture, as it competes with crops for nutrients and water.


Control Methods:

• Control of Johnson Grass often involves a combination of mechanical, chemical, and cultural methods.

• Mechanical methods include regular mowing or cutting to reduce seed production and control the growth of rhizomes.

• Herbicides may be used for control, but care must be taken to use them safely and effectively, following local regulations.

• Preventing the establishment of Johnson Grass through vigilant monitoring and early removal is important to prevent its spread.


Johnson Grass is a challenging invasive grass that requires active management to prevent its spread and protect native ecosystems. Local agricultural authorities often provide guidance on the best control practices for this invasive species.


Key Products for Control:

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