Associate Diploma in Horticulture

Female student sits in colourful garden

The Diploma in Horticulture program provides a basic curriculum in ornamental horticulture and an opportunity to take specialized courses in various components of the industry. Practical experience and training complements the more formal material presented in lectures and provides an opportunity to acquire the practical skills required in greenhouse and landscaping firms.

This program is offered at the Ridgetown Campus of the University of Guelph.

Admission Requirements

For information on admission requirements visit the Ridgetown Campus website

Sample First Year Courses

Semester 1

  • Communications & Software Applications I
  • Applied Plant Science
  • Applied Mathematics
  • Landscape Management
  • Plant Identification I
  • Greenhouse Management

Semester 2

  • Communications & Software Applications II
  • Introduction to Landscape Construction
  • Plant Propagation
  • Soil and Water Use in Agroecosystems
  • 1.00 electives or restricted electives

For full course descriptions and a listing of second year courses, check out the diploma program calendar


New for Fall 2022! A co-op option is available for students studying in the Associate Diploma in Horticulture program. Students are required to participate in one co-op term in addition to four academic semesters. The co-op experience improves students’ job search skills, work performance and networking abilities, while they explore career opportunities and make money. Learn more about the Associate Diploma in Horticulture co-op here.

Career Opportunities

  • Horticultural/landscape maintenance technician
  • Greenhouse assistant grower
  • Garden centre/nursery manager
  • Parks and recreation technician


Our OAC Student Liaison team is here to help! Have you applied to or are you considering this program, but have some questions? Not sure who to ask? Ask us! Our team of program experts will happily answer your questions or direct them to the people who can. Ask your questions here.