植物生物学系由农业与自然资源学院和自然科学学院共同管理。植物生物学是自然科学的一个分支，涉及植物生物学的各个方面，涵盖从分子到生态系统的所有层次的生物组织。植物生物学与植物和真菌的所有分类群的结构，功能，进化，生理学，分子生物学，生物化学，遗传学和系统学有关。植物生物学对于密歇根州立大学构成现代植物科学的学科的广泛分歧至关重要，它处理植物与社会之间的关系。该课程的学生可以研究植物生物学的各个方面，并受过训练以整合生物学组织不同层次之间的信息，同时对他们的专业领域有深入的了解。
The Department of Plant Biology offers Master of Science and Doctor of Philosophy degree programs in plant breeding, genetics and biotechnologyplant biology. The Graduate Program in Plant Breeding, Genetics, and Biotechnology (PBGB) is an interdepartmental program at Michigan State University. Our students research agronomic, forest and horticultural species and may choose from a broad array of educational courses. This program was established in 1981 and grants both the master's and doctoral degrees. This program is a collaboration between faculty members from the MSU departments of Forestry, Horticulture, Plant Biology and Plant, Soil and Microbial Sciences. We offer state-of-the-art laboratory facilities, access to research greenhouses, farms, and specialized equipment on the MSU Campus. Our faculty also compete successfully for internal and external funding for research projects. New students have a high degree of flexibility in selecting a major professor, committee members and a thesis project among this talented group. MSU is particularly known for research, teaching and extension activities in the plant sciences, thus, strong support and resources are available to students in PBGB.