Annual or Perennial Grass Height : 38cm to 74cm included Origin : Tropical and sub-tropical Southern Asia, Southeastern Africa Environment : Humid plains. Some species need to grow in a swamp environment. Climate : Warm, temperate. Humid.
Notes : The Oryza genus of grasses includes 22 wild species and 2 cultivated species, of which Oryza sativa (Common Rice) is the most popular. Rice is the most cultivated and consumed cereal all over the world, and therefore the most important food source for the human race. The cultivation requires a lot of irrigation, and for some species also a three month immersion in swamps; for this reason, Rice is widely cultivated in high rainfall areas.