Grassland covers almost half the reserve's vegetation. The main grass species are "Imperata cylindrica" and "Heteropogon contortus". khagra reed ("Phragmites karka") and "Saccharum spontaneum". They grow in the marshes around the seven small lakes. The main forest type is sal. Khair and sissoo grow by the side of rivers. The grassland being covered by trees is a major threat to the long-term existence of the main plants. Trees cover any grasses growing under them, mainly those that need more sunlight. Tree seeds are spread all over the grasslands. They mostly germinate near existing trees. Also, trees help in the growth of shade-loving grasses and prevent the growth of sun-loving species. This process of succession usually converts grassland into woodland over time.