Online Advanced Horticulture, Graduate Certificate | University of Nebraska

Advanced Horticulture, Graduate Certificate

Graduate Certificate

University of Nebraska - Lincoln

  • Course Delivery
    Fully Online
  • Total Credits
  • In-State Tuition Per Credit
  • Out of State Tuition Per Credit

Earn your degree from the University of Nebraska - Lincoln

Get the same diploma as on campus students

The online Advanced Horticulture, Graduate Certificate is designed to provide students with the opportunity to explore the field of horticulture beyond entry-level.

Students choose this program to:

  • Experience the breadth and diversity of the field through maximum flexibility in course selection.
  • Gain knowledge through courses in tree, floral and fruit production, as well as interior plants and business management.
  • Enhance or expand their career options in the field of horticulture through graduate-level coursework.

The program is designed for the following career paths:

  • Extension agents involved in horticulture-related programs
  • K-12 science teachers
  • Golf course superintendents
  • Municipal parks superintendents and employees
  • Landscape maintenance practitioners
  • Public garden, camp or park employee
  • Nursery, greenhouse and garden center professionals
  • Serious horticulture enthusiasts, such as master gardeners

Students who complete this certificate may also wish to pursue a plant-related master's degree such as a Masters of Science or a Masters of Applied Science in Agronomy or Horticulture.

This program is offered as part of the Great Plains Interactive Distance Education Alliance (GPIDEA) and provides you with diverse perspectives on the field. You enroll in courses at the University of Nebraska - Lincoln even though courses may be taught by other Great Plains IDEA member institutions. The certificate comes from the University of Nebraska - Lincoln.

Students who complete this certificate may also wish to pursue a plant-related Master of Science degree or a Master of Applied Science. 

Additional Certificates:

The University of Nebraska-Lincolns Department of Agronomy and Horticulture offers three graduate certificates in horticulture:

  • Advanced Horticulture
  • Ornamental Landscape and Turf Management
  • Floriculture and Nursery Production Management

The department is able to offer these three certificates as a member of the AG*IDEA Consortium.

Career Outlook: Work in the horticulture field ranges from grounds maintenance staff who require no formal education to scientists who need a minimum Ph.D. According to the U.S. Bureau of Labor Statistics (BLS), grounds maintenance workers held 1,309,300 jobs in 2016. The BLS reported from 2016-2024, there would be an 11% increase in employment for grounds maintenance workers. The projected amount of job openings during this period is 146,300. The BLS projects that businesses in green-industry occupations and careers that protect the planet will increase.

Additional career paths may include:

  • Olericulturist (vegetable grower, seller and marketer)
  • Urban farmer
  • Plant ecologist
  • Plant researcher or technologist
  • Arborist, forester
  • Florist or floral designer
  • Food scientist
  • Industry support
  • Inspection of plants
  • Landscape construction and management
  • Landscape design
  • Communications blogger, writer, photographer
  • Pest management
  • Farm or co-op organizational management
Ellen Paparozzi, PhD

Ellen Paparozzi’s key areas of focus are plant physiology (plant nutrition) and anatomy, floriculture and ornamental horticulture and plant physiology and production ecology. Her main research focus is on the broad topic of leaf yellowing and subsequent re-greening of leaves. She is approaching this topic using physiological, anatomical and molecular biological methods. She teaches several courses and has published numerous articles.

To be accepted to this program, you must have:

  1. A bachelor's degree in biology or a plant-related major.

  2. 3.00 GPA or above on a 4.0 scale.

  3. Successfully completed at least a semester of coursework in biology, plant sciences, genetics, algebra and chemistry.

  4. 3 letters of recommendation. These must be from professionals who are familiar with your work ethic or scholastic ability. Personal references from friends, relatives, etc. are not acceptable.

  5. A personal statement. In 1-2 pages, describe 1) your professional goals and career aspirations and specifically what you plan to do with your certificate, 2) background experiences, events, and/or education that have influenced your professional goals and 3) how enrolling in this certificate program will assist you in meeting your professional goals.

  6. Taken the TOEFL or IELTS. Only required if English is not your native language. Minimum score of 79 on Internet-based TOEFL, 600 on paper-based TOEFL or 6.5 on IELTS required for admission.

NOTE: This program is authorized, exempt, or not subject to state regulatory compliance and may enroll students from all 50 states

To apply to this program:

• Submit an official application for admission to the UNL Office of Graduate Studies. Along with the application, including one set of official transcripts from each college or university you attended, 3 letters or recommendation and your resume or vitae.

• Pay the non-refundable $50 application processing fee.

Apply Now

Application Deadlines

Fall Semester
May 15
Spring Semester
October 1
Summer Session
February 15

Core Courses

Course NumberCourse NameCredits
HORT 824Plant Nutrition and Nutrient Management3

Course Number: 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).

HORT 842BPlant Physiology3

Course Number: HORT 842B

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

HORT 843AAdvanced Greenhouse Crop Production4

Course Number: HORT 843A

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.

HORT 843KArboriculture3

Course Number: HORT 843K

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.

HORT 843MSeed Science4

Course Number: HORT 843M

Seed morphology, anatomy and chemistry. Germination, emergence and dormancy processes in seed, as well as various quality aspects including vigor, longevity and deterioration. Discussion of genetically engineered seeds and other current topics.

HORT 844AEnvironmental Nursery Production Practices3

Course Number: HORT 844A

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

HORT 844EGeneral Viticulture3

Course Number: HORT 844E

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.

HORT 888Business Management of Agriculture Enterprises3

Course Number: 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.

HORT 896Fruit and Nut Trees3

Course Number: HORT 896

Description to come.

HORT 896Plant/Water Relations3

Course Number: HORT 896

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

HORT 896Introduction to Permaculture3

Course Number: HORT 896

Permaculture means "permanent culture," and ..."is the conscious design and maintenance of cultivated ecosystems that have the diversity, stability, and resilience of a natural ecosystem." [Bill Mollison] This course will explore a design/thinking methodology that seeks to provide our essential physical needs, food, water, shelter, energy, etc., while doing so in an environmentally friendly, sustainable manner.

Cost for Nebraska Residents

  • Per Credit Hour

  • Tuition: $580.00
  • 3 Credit Hours

  • Tuition: $1740.00

Cost for Out of State Residents

  • Per Credit Hour

  • Tuition: $580.00
  • 3 Credit Hours

  • Tuition: $1740.00

Questions about tuition? We can help.

What's it like to take a program online?

  • Quality learning experience

    The University of Nebraska has offered distance education courses for more than 100 years so you can expect a quality, rigorous experience. Online courses are often highly interactive with faculty and students communicating through e-mail, discussion forums and chat groups. You’ll have direct access to world-class faculty – researchers who are experts in their fields or practitioners with real-world experience. Also, you’ll be part of a community of learners and can benefit from the perspectives of students from across the globe.

  • Flexibility

    Online learning gives you the flexibility and freedom to attend your classes wherever is convenient to you. You can save time and money by being able to continue to work and by avoiding relocation or travel costs. You will be required to complete assignments in a certain timeframe, but in most instances, you can log in and complete coursework during the time of day that works best for you. You aren’t tied to a specific class time.

  • Service you expect from a leading University

    Online learners at the University of Nebraska have access to the same student services available to on-campus students. An academic adviser will guide you along your journey, library services are available to help you excel in your program and career services are available when you are ready to take your next step. These are just a few of the services in place to help you succeed.

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