Under the trees lie important areas of plants such as the herbaceous "Crotalaria" and "Indigofera". During the larval stages, caterpillars feed on leguminous plants of the genus "Crotalaria". Some species of "Crotalaria" are grown as ornamentals. Another practical application of "Crotalaria juncea" includes fuel. "Crotalaria retusa" seeds are some of the most toxic of "Crotalaria" species. After ploughing, the ground are cultivated with plants such as green beans and striped Crotalaria. Unlike some other species of "Crotalaria", it is an annual plant. They can be found in the leguminous seeds, foliage, stems, or roots of Crotalaria plants. "Crotalaria juncea" has many practical applications in the modern world. "Crotalaria retusa" is grown as a fibre crop and as green manure. Similarly, "Crotalaria juncea" can be used to improve nutrient patterns in agricultural plants. Furthermore, "Crotalaria juncea" has applications in the agricultural field since it impacts common food production.