Online Graduate Certificates in Horticulture

Program Summary
Cost per credit hour:

2021-2022:  Graduate $590 | Undergraduate $420

12–15 Hours

3–4 Hours

Working in the horticulture field, you understand that flexibility is important.  So why not enhance your knowledge by choosing a program built with flexibility in mind?  With three certificates to choose from, faculty from four leading research universities, and courses offered online, you can learn about topics that interest you when it’s convenient for you.  

Who should consider this certificate?

A graduate certificate in horticulture is perfect if you are entering the field, hoping to advance your career, or are passionate about growing plants. 

  • Horticulture agents involved in extension programs
  • Master Gardeners
  • Graduate students in related majors, such as Biology, Entomology, and Plant Pathology
  • 9-12 grade science teachers
  • Golf course superintendents
  • City parks and recreation employees
  • Landscape maintenance managers
  • Nursery, greenhouse, and garden center industry professionals
  • Individuals wanting to use these courses to jump-start a Master of Science in Horticulture
  • Research technicians in academia and industry


Brad Kindler, a student in the Horticulture program, is wearing a denim buttoned shirt standing outdoors with trees behind him.

Completing the certificate in Advanced Horticultural through AG IDEA was a valuable and motivating experience.  As a property manager and landscape designer, the diverse coursework required by the certificate was immediately applicable to my daily work decisions.  In addition, I was exposed to a deepening of knowledge that allowed me to incorporate new management programs and horticultural practices that will develop over the seasons to follow.  This is important, because as landscapes change and grow, so too should our knowledge of work in horticulture fields evolve.  The AG IDEA certificate program helped me greatly in this regard.

Brad Kindler, Horticulture student, University of Nebraska-Lincoln

What are my certificate choices?

Choose from three certificates to find the right fit for your interests and experiences.  Courses are offered during spring, summer, and fall sessions.  An advisor will help ensure your path to completion is smooth.

Advanced Horticulture Certificate

The certificate in advanced horticulture provides the basic knowledge and skills required to master advanced practices and principles in horticulture and is an excellent foundation for horticultural management positions, teaching, or graduate school.  Courses cover a broad overview of horticultural production, balanced with basic coursework.

  • Plant physiology, nutrition, and irrigation science
  • Nursery, greenhouse, and edible food crop production
  • Horticultural business management

Floriculture and Nursery Management Certificate

The floriculture and nursery management certificate will develop your knowledge of plant function during crop production by focusing on the following topics:

  • Ornamental herbaceous and woody plants
  • Plant nutrition and physiology
  • Business and pest management

Ornamentals, Landscape and Turf Certificate

The ornamentals, landscape, and turf certificate will concentrate on the best management practices used in the green industry for home landscapes, business parks, golf courses, municipal parks, and similar areas. This professional practice-oriented certificate includes coursework in:

  • Irrigation
  • Plant nutrition and plant response to environmental conditions
  • Plant identification and selection

You may choose to use this certificate as a stepping stone to begin your master’s degree in Horticulture.  Some member universities who offer this certificate also offer a master’s degree, so the transition would be easy.  These universities include:  the University of Nebraska-Lincoln, Texas Tech University, and North Carolina State University.

AG IDEA Student Handbook

Certificate titles vary by university. Consult each university for the title as it will appear on the certificate.

Course List for Advanced Horticulture Certificate

List of Undergraduate Courses

University Contact
These campus coordinators can help you navigate Great Plains IDEA. Click on the university name to learn more about how Great Plains IDEA works at that campus. Ashley Schultz
Breanna Collins
Ashlee Murden
Melissa Sailors
University Members
Members of the Great Plains IDEA are universities accredited by a regional accrediting agency recognized by the U.S. Department of Education. Member universities recruit, admit and graduate students, teach in an academic program and contribute to the leadership and maintenance of the alliance. Membership in the alliance is a selective process that engages institutional leadership at all levels.

– – Trisha Miller, Youth Development Graduate
See more testimonials »