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This program is offered through Ag*IDEA, a national consortium of universities offering online programs and courses in agriculture disciplines.

Students apply and are admitted at one university; enroll in all courses at that university and graduate or receive a certificate from that university. The online courses are taught by the best faculty in the discipline from several universities within the consortium.

Each University of Nebraska campus is regionally accredited by:

The Higher Learning Commission


Advanced Horticulture, Graduate Certificate

Take your green thumb to a higher degree.

Program Description

This online graduate certificate in Advanced Horticulture offers individuals the opportunity to explore horticulture courses beyond the entry level and experience the breadth of horticulture with no selection restrictions. 

Courses are available in tree, floral, nursery, and grape production as well as interior plants and business. 

This certificate is designed for:

  • Horticulture agents involved in Extension programs
  • K-12 science teachers
  • Golf course superintendents
  • City parks and recreation employees
  • Landscape maintenance practitioners
  • Nursery, greenhouse and garden center industry professionals
  • Horticulture enthusiats, such as Master Gardeners

Delivery Format

Home Campus: University of Nebraska - Lincoln

Method of Delivery: 100% Online - what's this?Program can be completed fully at a distance. Courses are asynchronous, meaning students and instructor may access content at any time and do not have to be connected to the Internet at the same time. If your program includes an internship or practicum, experiences may be completed in the student's local area.

All online courses are accessed via the Internet and use a learning management system. Technology requirements may vary by program and course, but all campuses have basic recommended requirements. High-speed Internet is required.

Interaction with professors and other students may include:

  • E-mail
  • Online discussion boards
  • Phone or video conferencing
  • Other forms of electronic and print communication

Supplemental materials for some courses may include:

  • Printed material and scanned documents
  • Digital resources accessed through university libraries
  • Videos accessed via the Internet, CDs or DVDs
  • Other media

To be successful, students taking online classes should be reasonably comfortable using a computer and the Internet. Learn more about online student tips for success.

Academic Year 2014 - 2015

Tuition rates are effective for the academic year listed. Tuition is subject to change.

Nebraska Resident:

 TuitionDistance Ed. FeeTechnology FeeLibrary FeeTotal
Per credit hour$500.00$0.00$0.00$0.00$500.00
3 credit hour$1,500.00$0.00$0.00$0.00$1,500.00


 TuitionDistance Ed. FeeTechnology FeeLibrary FeeTotal
Per credit hour$500.00$0.00$0.00$0.00$500.00
3 credit hour$1,500.00$0.00$0.00$0.00$1,500.00

The online graduate certificate in Advanced Horticulture requires a minimum of 12 credit hours. Students will work with their adviser to determine when courses are offered and which courses you should take.

Program of Study

Program Courses 12 credit hours Working with an adviser, students may select from HORT 824, 843E, 843K, 844A, 844E, and 888; select only one course from HORT 842E or 843A or 842B or 842J 
Course Name
Course #
Core Courses

Plant Nutrition and Nutrient Management

HORT 824

(AGRO 824) Macro- and micronutrient elements and their function in the growth and development of plants; the role of single elements; interaction/balances between elements and nutrient deficiency/ toxicity symptoms as they affect the physiology of the whole plant; and the relationship between crop nutrition and production/environmental considerations (e.g. yield, drought, temperature, pests).

Plant Physiology

Presents fundamental concepts underlying the science of crop physiology, including crop phenology, canopy development and light interception, photosynthesis and respiration, and dry-matter partitioning.

Floral Crops Production

The principles and commercial practices for producing floral potted crops and cut flowers, emphasizing the physical responses of plants to their environment. Aspects of post-harvest physiology will be covered.

Water Issues in Lawn and Landscape


Examines critical water issues related to irrigation in urbanizing watersheds, with an emphasis on water quality and quantity. Factors impacting water scarcity and quality will be discussed. Course will help students understand the interrelatedness of correct irrigation practices and water quality/quantity, and will equip them with the necessary career tools to help protect water resources through application of science-based irrigation practices.

Greenhouse Crop Production


Principles and practices of commercial production of greenhouse crops involving crop scheduling, greenhouse construction, heating, cooling, growing media, pest management, nutrition, fertility, growth regulation, irrigation, post‐harvest handling, and marketing of greenhouse crops.

Advanced Interiorscaping


This course focuses on the physiological principles and industry practices in the production, moving, care, and maintenance of interior plants. This course will equip students with the career tools to design, install and maintain interior plantscapes. This goal will be accomplished through the review of the pertinent literature and through class exercises designed to improve students' skills and knowledge of interior plant physiology, care and maintenance.

Advanced Arboriculture


This course focuses on the physiological principles and industry practices in the production, moving, care, and maintenance of ornamental trees, shrubs and ground covers. The purpose of this course is to provide students with the career tools to install and maintain woody plants. This goal will be accomplished through the review of the pertinent literature and through class exercises designed to improve students’ skills and knowledge of woody plant physiology, care and maintenance.

Environmental Nursery Production Practices

In this course, cultural nursery crop production practices will be presented with consideration of current recommended Best Management Practices, conservation of resources, scientific research-based investigations related to nursery cultural practices, potential risks to nursery personnel and off-site movement of airborne materials and effluents to surrounding areas

General Viticulure

This broad-based course covers aspects of grapes from vine anatomy to final products. This course includes cultivars, propagation, canopy management, diseases, weed control, physiology, anatomy, irrigation, wine production, climates and soils.

Business Management of Agriculture Enterprises

HORT 888

Students will research a specific agricultural enterprise then develop and present a business plan using materials from the primary area of interest. This course requires the completion of a shadowing assignment and the analyses of case studies.


University of Nebraska online programs have the same quality instructional faculty as on campus; individuals from a variety of backgrounds, who embody the combined qualities resulting from research experience and professional/field experience.

Dale Bremer, Ph.D., Associate Professor, Kansas State University

Helen Kraus, Ph.D., Assistant Professor, North Carolina State University

David Lambe, MBA, Assistant Professor of Practice

Cynthia McKenney, Ph.D., Associate Professor and Chair, Texas Tech University

Ellen T. Paparozzi, Ph.D., Professor

Sara Spayd, Ph.D., Professor, North Carolina State University

Paul Twigg, Ph.D., Professor

Kim Williams, Ph.D., Professor, Kansas State University

Guidelines for Admittance

To participate in the online Advance Horticulture Graduate Certificate program, the student must have:

  • Bachelor's degree from an accredited 4-year college
  • GPA of 3.0 or higher (undergraduate and/or graduate)
  • Letter of intent - statement of interests and professional goals
  • Curriculum vita or resume
  • Three letters of recommendation
  • Verification of English proficiency (if applicant's native language is not English)


Application Checklist

  1. Apply to UNL Graduate Studies

    Application Deadlines

    This program offers rolling admissions – applications will be considered upon receipt.

    Students may be allowed to enroll in courses before being formally admitted to the certificate program by applying as non-degree, post-baccalaureate.


    Online Worldwide Educational Representative

    Program Contact
    Cheryl Griffith
    Phone: 402.472.5515

    Request Information