Master Composter Course – City of San Diego

Sep 17, 2022 9:30AM—Oct 15, 2022 12:30PM


Tecolote Canyon Nature Center 5180 Tecolote Road San Diego, CA 92110


Become a Master Composter!

  • Minimize your carbon footprint. Keeping food and yard waste out of the landfill reduces harmful methane gas emissions.
  • Use this “waste” to create amendments 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 and improves water retention. 

The Master Composter course provides training in the art and science of composting through lectures, demonstrations, and a field trip. The course covers the following topics:

  • Traditional composting & vermicomposting
  • Compost bin building and troubleshooting (in teams!)
  • Microbiology of composting
  • Bokashi fermentation
  • Macrodecomposers in your compost pile
  • Environmental impacts
  • … and much more!

Master Composter certification requires attendance at all 5 classes, as well as 30 volunteer hours of related community service. Meet new people in this fun, hands-on course and develop your composting knowledge, all while serving your community! Class size is limited.

This class will meet Saturdays from 9:30 AM – 12:30 PM :

  • Week 1 – September 17
  • Week 2 – September 24
  • Week 3 – October 1
  • Week 4 – October 8
  • Week 5 – October 15

Residents of the City of San Diego County will receive preferential registration. All others will be placed on a waitlist and apprised of space available 1-2 weeks before the start of the course.

BEFORE REGISTERING, please enter your address here to check your residency. You can select the City of San Diego Residents ticket option ONLY if your jurisdiction boundary result is “SAN DIEGO.” All others must select the waitlist option.

Course Fee: $25*

*If this course fee presents a financial hardship, it may be waived upon request. Please contact Diane Hazard at before registering to inquire.

This course has been made possible through generous funding from