Colorado State University

What you'll study

The programme centres on original research supervised by faculty in plant biology, ecology and related disciplines. Doctoral students combine advanced coursework with laboratory- and field-based investigations in areas such as plant physiology and development, molecular genetics and genomics, plant–microbe interactions, population and evolutionary biology, community and ecosystem ecology, and applied plant conservation and restoration.

• Core topics commonly studied: advanced plant physiology, plant developmental biology, population genetics, molecular ecology, ecological modelling and biostatistics.
• Research methods and lab courses: contemporary molecular techniques (genomics, transcriptomics), stable isotope and physiological methods, field sampling and long-term ecological monitoring, quantitative data analysis and bioinformatics.
• Professional development: scientific writing and grant preparation, pedagogy and teaching practicum, seminar presentation and communication to non-specialist audiences.
• Thesis work: after an initial period of coursework and research rotation or directed reading, students develop and defend a dissertation proposal, conduct independent research, and present and publish their findings as a doctoral dissertation.

Entry requirements

Applicants are expected to hold a relevant bachelor’s or master’s degree with strong preparation in biology, ecology, plant science, genetics or a closely related discipline. Successful applicants typically demonstrate substantial research experience and a clear statement of research interests aligned with departmental faculty expertise.

• Academic transcripts showing relevant undergraduate or graduate coursework in biology, ecology, genetics, physiology and quantitative methods.
• Letters of recommendation, with at least one from a research supervisor who can attest to research ability and potential for doctoral study.
• A statement of purpose that outlines research interests, relevant experience and proposed faculty mentors within the department.
• Evidence of research experience such as publications, conference presentations, or detailed descriptions of laboratory/field projects.
• International applicants must meet the university’s English language requirements; additional documentation or examinations may be required according to institutional policy.

Career prospects

Graduates of the PhD in Plant Biology pursue careers across academia, government and the private sector. Typical pathways include tenure-track faculty positions, postdoctoral research, positions with national and regional government research agencies, roles in agricultural and biotechnology companies, environmental and conservation organisations, botanical gardens and herbaria, as well as science communication, policy and consulting.

• Academic research and teaching at universities and colleges.
• Research scientist positions in government laboratories and agencies focused on agriculture, natural resources and biodiversity.
• Industry roles in crop science, plant breeding, biotech and ecological consulting.
• Applied conservation and restoration positions with NGOs, botanical institutions and land management organisations.

Why study at Colorado State University

Colorado State University offers a strong environment for plant biology research, combining active laboratory programmes with exceptional field opportunities in the Rocky Mountain region. Students benefit from multidisciplinary collaborations across departments such as Biology, Horticulture and Landscape Architecture, and Soil and Crop Sciences, enabling integrative research from genes to ecosystems.

• Access to specialised resources including campus greenhouses, herbarium collections and core genomics and microscopy facilities.
• Proximity to diverse alpine, montane and prairie ecosystems that support field-based experiments and long-term ecological studies.
• Collaborative research culture with opportunities to work with government research partners and regional conservation initiatives.
• Structured doctoral training that emphasises publication, grant writing and teaching experience to prepare graduates for a range of science careers.