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Master Composter Course - City of San Diego (Five Week Course)

REGISTRATION IS NOW CLOSED for the spring City of San Diego Master Composter course. If you would like to participate in the training, check out the fall City of San Diego Master Composter course on our Events page, starting October 10!

Learn the art and science of composting!

  • Minimize your carbon footprint by keeping food and yard waste out of the landfill, helping reduce harmful methane gas emissions.
  • Use this "waste" to create a nutrient-rich amendment for your garden. Compost use reduces the need for synthetic fertilizers and pesticides. 
  • Reduce water use and increase water retention. Compost increases your soil's water holding capacity by up to 7 times and retains water for up to 7 days.
  • Work with a team to build, maintain and troubleshoot a traditional compost pile. Course will also cover composting with worms (vermicomposting) and compost fermentation (Bokashi), and more!

Course includes lectures, demonstrations, and a field trip. 

Our graduates play a variety of roles in their communities, including: building compost piles in community gardens, helping students manage their school worm bins, and supporting Solana Center outreach at workshops, school presentations and community events.

Master Composter certification requires attendance at all 5 classes, as well as 30 volunteer hours of related community service. 

This 5-week course will meet at the Ridgehaven "Green Building" every TUESDAY evening from 5:00 - 8:00 PM.

Week 1 - March 17, 2020
Week 2 - March 24, 2020
SKIP March 31st (in observance of Cesar Chavez Day)
Week 3 - April 7, 2020
​Week 4 - April 14, 2020
​Week 5 - April 21, 2020

Course Fee: $25*. City of San Diego residents receive preferential registration. 
Non-residents will be placed on a waitlist; registration will open 1 to 2 weeks before the start of the course, and is contingent on space available.

*If the fee presents a financial hardship, please contact Diane Hazard at to apply for a scholarship. 

This course has been made possible through generous funding by:

City of San Diego Environmental Services Logo

Thanks to our site provider, Greenhaven at Ridgehaven.

Event Classification
Funding Source Contract-funded
Category Master Composter Class
Contract San Diego City
Special Note
Stream to Volunteer Opportunities
March 17th, 2020 5:00 PM   through   April 21st, 2020 8:00 PM
The Greenhaven at Ridgehaven
9601 Ridgehaven Court
San Diego, CA 92123
United States

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Main Phone: (760) 436-7986  ext. 700
City of San Diego Resident 25.000000000
Non-Resident of City of San Diego (waitlist) 0.000000000

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