The postgraduate teaching in Botany at this University started in 1958 at L. S. College, Muzaffarpur under the then University of Bihar. The University got its campus in 1973. In 1976 Postgraduate and Undergraduate teaching were bifurcated. At present the University Department is running in its double storied building, with a lush green sprawling campus. The building of this Department was built under the guidance of the then Head, Dr S. S. Prasad.The first batch 1971-73 of M.Sc. passed out from this Department and since then, the students have passed every year from the Department with flying colours. Dr Ranjana Kumari is at present Head of the Department. The faculty members of this department who have retired in the past The Late Dr A.B. Prasad, The Late Dr K.K. Jha,  The Late Dr  T.K.S. Singh, The Late Dr S.N.Pandey, The Late Dr U.K. Sinha, The Late Dr B.D.Sinha, The Late Professor B.B. Srivastava, Dr S.C. Srivastava, Dr B.N.Verma, Dr R.S. Bilgrami, Dr K. Mohan, Dr C.P. Shukla, Dr Preeti Prasad, Dr S. Kumar, Dr B. B. P. Sinha, The Late Dr R. P. Roy, Dr S. N. Sharma, Dr L. N. Shukla, Dr S. D. P. Sinha, Dr A.K. Singh and Dr. K.Hamidi. They have brought laurels for the Department in many ways. The Department  has completed several major and minor research projects funded by UGC, CSIR, Man & Biosphere (MAB) Programme, D.O.En. Bio Mass Project, DST, AICTE, Special Assistance Programme. of UGC in the past. Since the very beginning, the department  had established research laboratories in the area of Mycology & Plant Pathology, Cytogenetics & Plant Breeding, Plant Physiology, Morphogenesis & Tissue Culture (Plant Biotechnology), Algology. The post graduate students of Botany by virtue of their specialization are doing well in different fields.