Thank you for your interest! Applications are currently closed. For notification on when our next Master Composter course will be offered, sign up here. We anticipate the next course to be offered in Spring 2018.

What is the Master Composter Program?

Green Action Centre’s Master Composter Program is an in-depth, hands-on train-the-trainer composting course and volunteer program, allowing participants to provide compost education and outreach to the public.

This program is an excellent opportunity to meet and network with other like-minded people, acquire composting knowledge and to educate others on the value of composting. By becoming a Master Composter, you join a growing community of earth conscious individuals, people just like you!

Once you have finished the course, you are required to complete 30 hours of composting related volunteer activities in the community within a two-year period. Volunteer time is gained by various activities such as helping your family and neighbours start composting, setting up composting programs at a workplace or school, building community compost bins, staffing our display at public events, delivering composting presentations and other activities that promote composting to residents, businesses, schools, and other community groups. Green Action Centre provides numerous volunteer opportunities throughout the year in order to complete your hours. Our volunteer activities involve participating in various highly frequented events such as Gardening Saturday and the Home Expressions Show. As a volunteer you are also encouraged to seek out opportunities yourself.

As a course participant you will learn about composting through various activities, lectures, tours, discussion groups, and videos. Throughout the course, you will gain knowledge on the details of composting including sessions on soil health, compost maturity, biology of the compost pile and vermi-composting activities to name a few. You will also receive a manual that has in-depth composting information.

As a member of the Master Composter Network we will provide you with updates and composting related information by e-mail and through our e-newsletters. Further, special invites for tours and events are offered to Master Composters throughout the year.

Why be a Master Composter?

When taking this course, you will become an official Master Composter and the rewards are many. Being a Master Composter enables you to:

  • give back to your community
  • spread the word on the benefits of composting
  • educate others to reduce waste and help the environment
  • meet and network with other like-minded people
  • gain valuable work experience
  • learn composting skills
  • improve public speaking ability (if you’re up for it!)
  • participate in exciting events and tours

Who Can Apply?

All Manitoba residents, 18 years and older, interested in composting and sharing their knowledge with others can apply. Beginners are welcome!

Course Content

This 12-hour course will cover the following topics that are delivered by lecture-style format but also through hands-on activity and group discussions. Our goal is to provide content that is understandable for those who do not have a scientific background and have no prior knowledge on composting. Topics include:

  • Backyard composting
  • Vermicomposting
  • Compost organisms
  • Compost maturity
  • Community gardens
  • Benefits and barriers of composting
  • Volunteer expectations

Expectations and Commitment

Master Composter participants are expected to attend all of the course sessions, set-up and operate a backyard compost or a vermicompost at home or at work, and encourage and show others how to do the same. Master Composters must also complete 30 hours of volunteer time to this program in Manitoba within the next two years after completing the course. When working in the community, Master Composters acts as ambassadors for the Green Action Centre.


Green Action Centre strives to provide assistance and guidance to anyone in the community that wants to start composting. We are a registered charity that depends on grants and donations. To help cover our costs, there is a fee of $100 to attend the course. If you cannot afford the fee, please contact us to discuss alternative arrangements. Once the participant has completed their 30 hours of volunteer work, he or she can choose to have $50 refunded or choose to donate it to Green Action Centre for future composting awareness activities.

Next Course

We anticipate offering the next Master Composter training in Spring 2018, thanks to funding from the City of Winnipeg’s Water and Waste Department. This course will be offered over a series of evening and weekend sessions to accommodate those who have daytime committments – plan to commit 12-15 hours over 4-5 sessions. We do our best to choose transit-accessible centrally-located sites for the training. Participants are generally expected to attend all sessions. If you’d like to be notified when we are accepting applications for the next course, please fill out our online notification form.

How Do I Apply?

We will open applications well in advance of the next course. It’s a simple process of filling out an online application form (or an alternate arrangement if needed) which has questions related to motivations for your application and past and current volunteer experience. Green Action Centre reserves the right to choose applicants based on suitability.  The selection process may include a phone and/or in-person interview.

Space is limited, so apply early once you get the notification!

Please note: we do our best to make all course sessions accessible to wheelchair users! If you have questions or concerns about accessibility, please contact us.

Other Training Opportunities

We know that Spring 2018 feels like a long way away. In the meantime, we encourage you to browse our website and other resources to learn more about composting. Contact us as below anytime with your big, little, urgent, or crazy composting questions (we pretty much guarantee you we’ve heard it before, whether basic or weird and wonderful). If you’re more of an in-person learner, we do regularly offer public talks on both backyard and vermicomposting. Check them out here, or watch our Events page! You can also sign up for notifications about when we will be offering the next set of presentations.


  • Give us a call: toll free at 1-866-394-8880 or in Winnipeg at 204-925-3777
  • Drop us an email.
  • Check out our composting FAQ page.