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Master Composter Course in Unincorporated San Diego County (5 Week Course)

We're sorry, but this event is currently full. Please check our events list for other Master Composter offerings. Currently there are two options: one funded by the City of San Diego and the other funded by the City of Encinitas.

You can also fill out the Master Composter Interest Form to receive notifications of upcoming courses in your area.

The five-week Master Composter course provides training in the art and science of composting. Course includes lectures, demonstrations, and a field trip.

Become a Master Composter!

  • 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).

Master Composter certification requires attendance at 4 out of 5 classes, as well as 30 volunteer hours of related community service. 

Week 1 Sunday, February 19th 10 AM - 12:30 PM
Week 2 Sunday, February 26th 10 AM - 12:30 PM
Week 3 Sunday, March 5th 10 AM - 12:30 PM
(Please note there is no class the week of March 12th)
Week 4 Sunday, March 19th 10 AM - 12:30 PM
Week 5 Sunday March 26th 10 AM - 12:30 PM

Course Fee: $25*. Residents in unincorporated San Diego County receive preferential registration. Registration will be open to non-residents 1 to 2 weeks before the start of the course.

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 from:

Thanks to our site provider:

Event Classification
Funding Source Contract-funded
Category Master Composter Class
Contract County Composting
Special Note
Stream to Volunteer Opportunities
February 19th, 2017 10:00 AM   through   March 26th, 2017 12:30 PM
Water Conservation Garden
12122 Cuyamaca College Dr. W
El Cajon, CA 92019
United States

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Main Phone: (760) 436-7986  ext. 700
Main Phone: (760) 436-7986  ext. 707
Email: Email:
Resident of County of San Diego - $25
Non-Resident of County of San Diego - Waitlist