Our unique, flexible Master Gardener online course offers great options for enthusiasts and pro gardeners alike.

Designed For
A course for ​professional and hobbyist gardeners interested in sustainable practices
September 2016
Online and on-site
Option 1: $490
Option 2: $390
PLANET: 24 CEUs from category Educ3
Oregon Landscape Contractors Board (OLCB): 16 CEHs

Learn the art and science of growing and caring for plants with Master Gardener™ Online.

Enhance Your Gardening Know-How with Our Unique Self-Paced Master Gardener Online Short Course Series 


Those who do not need or desire certification or continuing education may complete take this low-cost, self-paced course series for their own personal and professional development. Enjoy all of the knowledge of our certification options below, at a fraction of the cost. Click here for details.

Related Course: Plant Disease Diagnosis Certificate - 10-Week Online Course Begins Oct. 6, 2015

You may also be interested OSU's Plant Disease Certificate program, a 10-week online course led by community horticulturist and Master Gardener leader Neil Bell. Join us to learn a systematic approach to choosing the best care for a variety of ill crops, garden and landscape plants. Course includes handy online diagnostic tools. CEU and CEH credit offered. The course is intended for a broad audience, including landscapers, gardeners, farmers, nursery workers and professionals in natural resource industries, Time is running out! Learn more and register now.


Become a Certified Master Gardener with One of Two Convenient Options

Note: We are currently redesigning our instructor-led Certified Master Gardener course with valuable new information and features. We look forward to launching the updated course in September 2016. In the meantime, online course materials are available through OSU's low-cost, self-paced Master Gardener online series, starting with our free Basic Botany course.

Option 1: Certificate of Master Gardener Home Horticulture

Master Gardener training, with certificate/certification upon course completion, will be offered once again in September 2016

Participants receive a Certificate of Home Horticulture upon successful completion of the online course, which includes forum conversations, quizzes and an exam.

Those interested in applying the concepts learned in the online training course through community volunteer opportunities can become a Master Gardener with this course option.

Option 2: Master Gardener Professional Certificate and Badge (CEUs available)

To become a Master Gardener and receive a badge, participants must complete 40 to 70 hours of on-site volunteer practicum in addition to the online coursework. Master Gardeners must fulfill volunteer and continuing education responsibilities to maintain certification.

  • The basics of botany and entomology.
  • Integrated pest management and pesticide safety.
  • Soils, fertilizers and composting.
  • Ornamental, herbaceous plants and woody plants.
  • Vegetable, indoor and container gardening.
  • Sustainable landscaping.
  • Plant pathology.
  • Gail Langellotto

    Instructor Gail Langellotto

    Gail Langellotto works with the Oregon State University Master Gardener program, state and local agencies, nonprofits and other non-governmental organizations. She helps to develop a better research-based understanding of how to design and sustainably manage gardens and parks to maximize ecosystem services. Her OSU Extension Service and outreach efforts are focused on communicating research-backed management practices to home gardeners and commercial landscapers.

    Email: gail.langellotto@oregonstate.edu 

Great foundation for home gardener
Carl Ware
Excellent course, well presented. Thank you!
Donna Andrew