Niger seed is a type of wild, annual grass that is typically found in the dry, hot and arid regions of Africa. Niger seed is used as a dietary supplement to help with issues of fatigue and weakness.Niger seed is a type of seed that is not genetically modified. This type of seed is a staple in African cuisine and is the base of many African dishes. Niger seed can be used in many different dishes such as soups, salads, and stews.