Pennisetum purpureum (updated name: Cenchrus purpureus Schumach) , also known as Napier grass, elephant grass or Uganda grass, is a species of perennial tropical grass native to the African grasslands. It has low water and nutrient requirements, and therefore can make use of otherwise uncultivated lands. Historically, this wild species has been used primarily for grazing; recently, however, it has been used as part of a push–pull agricultural pest management strategy. This technique involves the ...