Among communities from the areas where the plant is native, khat chewing has a history as a social custom dating back thousands of years analogous to the use of coca leaves in South America and betel nut in Asia.It is a controlled substance in some countries, such as Canada, Germany, the United Kingdom, and the United States, while its production, sale, and consumption are legal in other nations, including Djibouti, Kenya, Uganda, Ethiopia, Somalia and Yemen.In recent years, however, improved roads, off-road motor vehicles, and air transportation have increased the global distribution of this perishable commodity, and as a result, the plant has been reported in England, Wales, Rome, Amsterdam, Canada, Israel, Australia, New Zealand, Water consumption is so high, groundwater levels in the Sanaa basin are diminishing, so government officials have proposed relocating large portions of the population of Sana'a to the coast of the Red Sea.One reason for khat being cultivated in Yemen so widely is the high income it provides for farmers.) is a flowering plant native to the Horn of Africa and the Arabian Peninsula.Khat contains the alkaloid cathinone, an amphetamine-like stimulant, which is said to cause excitement, loss of appetite, and euphoria.It is also known as jimaa in the Oromo language and mayirungi in Luganda Language.
In Uganda it is grown in Central region, kasenge Nakawuka road,nkugulutale,kisozi, Nsaggu and some parts of Western region of the Country .It takes seven to eight years for the khat plant to reach its full height.Other than access to sun and water, khat requires little maintenance.Ground water is often pumped from deep wells by diesel engines to irrigate the crops, or brought in by water trucks.
The plants are watered heavily starting around a month before they are harvested to make the leaves and stems soft and moist.
In other countries, outside of its core area of growth and consumption, khat is sometimes chewed at parties or social functions.