Our one-of-a-kind and newly updated Master Gardener online program offers great options for enthusiasts and pro gardeners alike.

Designed For
A course for ​professional and hobbyist gardeners interested in sustainable practices
January 23, 2017 - April 21, 2017
Registration deadline for Option 1: January 13
Registration deadline for Option 2: December 16
Option 1 (Certificate of Home Horticulture): $490
Option 2 (Master Gardener Professional Certificate and Badge): $390
National Association of Landscape Professionals (NALP): 24 CEUs
Oregon Landscape Contractors Board (OLCB): 16 CEHs

While Master Gardener Option 1 is currently waitlisted, space remains available for Master Gardener Option 2.

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

Become a Certified Master Gardener or Earn a Certificate of Home Horticulture

Option 1: Certificate of Home Horticulture

Participants receive a Certificate of Home Horticulture upon successful completion of the online course, which includes forum conversations, quizzes and an exam. This option is best suited for those wanting a comprehensive course in sustainable gardening, for professional development or personal enrichment purposes.

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

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.​

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.


Upon completion of the Master Gardener Series, you will receive a digital badge. Showcase your digital badge on Facebook, LinkedIn and other social media platforms to show friends, colleagues and potential employers what you’ve learned


  • 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 

  • Signe Danler

    Signe Danler is a veteran Master Gardener and landscape designer with a Masters of Ag degree in Horticulture. With the OSU Extension Service Master Gardener Program, she uses her experience and training in gardening, urban forestry and ecological landscaping to communicate about and promote sustainable gardening and landscaping practices.

    Email: signe.danler@oregonstate.edu 

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