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Article: Gamba Grass

Gamba Grass

Common Name

Gamba grass, Rhodesian andropogon, Rhodesian bluegrass, Tambuki grass.

Scientific Name

Andropogon gayanus





Seasons of Growth


Key Distinguishing Feature

Tall grass with large seed heads, often invasive in savannahs.

• Growth Form: Gamba Grass is a tall, robust grass species that can reach heights of 2-4 meters (6.5-13 feet). It forms dense stands or clumps.

• Leaves: The leaves are long, narrow, and often have a bluish-green colour. They have a prominent midrib.

• Seedheads: The seedheads are large and feathery, with long awns that can extend beyond the seeds.

• Habitat: Gamba Grass is commonly found in tropical and subtropical regions, particularly in areas with a savanna or grassland ecosystem.

Ecological Impact:

• Gamba Grass is considered an invasive species in many regions, particularly in parts of Australia. It can form dense monocultures, outcompeting native vegetation and altering fire regimes.

• It is also known for its high fuel load, which can increase the intensity and frequency of wildfires in affected areas.

Control Methods:

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

• Mechanical methods include mowing, slashing, or controlled burning to reduce its biomass and seed production.

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

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

Gamba 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.

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