Megathyrsus maximus, commonly referred to as Guinea grass, is a robust perennial bunch grass native to the savannas and open grasslands of Africa and Yemen, often found in areas with scattered trees and along riverbanks. It is a highly adaptable species that can grow in a variety of soil types and is known for its ability to tolerate wildfire and drought conditions. Guinea grass typically reaches heights of 2 to 11 feet (0.6 to 3.4 meters) and is characterized by its upright tufts of foliage and slender, arching stems that bear narrow, spike-like inflorescences during its flowering season.

This grass is valued for its use as forage for livestock, and its high productivity makes it suitable for producing silage and hay. In cultivation, it requires full sun to partial shade and can thrive in a range of soil conditions, although it prefers moist, fertile soils. Due to its fast growth rate and high seed production, Megathyrsus maximus can become invasive outside its native range, so it is crucial to check local regulations before planting. It is also used for erosion control and as a soil improver in agricultural systems. However, its invasive potential should be carefully managed to prevent it from outcompeting native vegetation.CC BY-SA 4.0