What helps elephant grass survive in a savanna?

Elephant grass, or Pennisetum purpureum, thrives in savanna environments due to its deep root system, which allows it to access water and nutrients even during dry seasons. Its ability to grow rapidly and recover quickly from grazing or fire helps it maintain dominance in these ecosystems. Additionally, the grass's high tolerance for drought and ability to regenerate after disturbances contribute to its survival and adaptability in the savanna.