PhD Plant Science at University of Arizona

Programme overview

The Plant Science Ph.D. program provides broad training in the plant sciences through coursework and in-depth research training opportunities in molecular, cellular, genetic, genomic and physiological aspects of plants, including model organisms, crops and wild relatives. Study the urgent questions surrounding sustainable agriculture, biodiversity and challenges to agricultural and urban plant systems, including plant improvements through genetics, breeding and symbioses;

Faculty: College of Agriculture, Life & Environmental Sciences | Duration: 6 years / 63 units | Study mode: full-time | Location: Tucson, AZ, United States

What you will study

The following courses are required for the Plant Science PhD (total 38 units): PLS 560, Advanced Plant Biology, 4 units, minimum grade expected B PLP 550, Principles of Plant Microbiology, 4 units, minimum grade expected B PLS 592, Directed Research, 2 or 3 units (1 unit each for two or three 7.5-week laboratory rotations), minimum grade expected B PLS 596A, School of Plant.

Official programme page

Application information

Entry requirements

Graduate College minimum (applies to all programmes; departments may add requirements): regionally accredited bachelor's degree or comparable international degree and a minimum 3.00 GPA for degree programmes on a 4.00 scale. The Graduate College does not require the GRE, though individual programmes may. Programme-specific requirements are listed in the Graduate Admissions Guide.

Domestic applicants: USD 15,500 a year (2026-27). FY 2027 published base tuition for the Resident Graduate rate band, which applies to main-campus graduate programmes. Excludes mandatory fees, college fees, program fees and differential tuition, housing and meal plans. Source

International applicants: USD 35,800 a year (2026-27). FY 2027 published base tuition for the Non-Resident Graduate rate band, which applies to main-campus graduate programmes. Excludes mandatory fees, college fees, program fees and differential tuition, housing and meal plans. Source

Spring semester begins January 13 and fall semester begins August 23 for undergraduate international students; for graduate students spring begins January 14 and fall August 25.

Apply through the official page: https://grad.arizona.edu/admissions

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