UPCOMING EVENTS

Master Composter Course – Japanese Friendship Garden Fall 2025
The Master Composter course provides training in the art and science of composting through lectures, demonstrations, and hands-on composting experience. The course covers 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!

Introduction To Manure Composting Webinar
Learn how you can save money and reduce pests by composting your livestock manure! Composting manure helps protect your local watershed, prevents pollution in waterways, and produces a fantastic soil amendment. Composting is easy and inexpensive and can help reduce flies, odors, and waterway contamination. Using composted manure on your garden and landscaping will also help enrich your soil and conserve water.

Manure Composting For Livestock Owners - Bonita
Learn how you can save money and reduce pests by composting your livestock manure! Composting manure helps protect your local watershed, prevents pollution in waterways, and produces a fantastic soil amendment. Composting is easy and inexpensive and can help reduce flies, odors, and waterway contamination. Using composted manure on your garden and landscaping will also help enrich your soil and conserve water.
This workshop will cover:
The basics & benefits of composting
How to incorporate manure into compost piles
Scaling up or down compost pile size
Local regulations and requirements
Preventing odors and flies; and
Protecting local water sources
Benefits of manure composting:
Saves water and money (fewer purchased amendments)
Increases soil health and biodiversity
Prevents flies and odors; and
Protects waterways
Made possible through generous funding by
Thanks to our host Sweetwater Community Garden

Composting with Aerated Static Piles - Ramona
What is an Aerated Static Pile (ASP)? ASPs offer a simple and cost-effective method for composting organic materials. These contained systems force air through the compost pile via ground-level pipes, encouraging rapid decomposition without the need to turn your compost piles! The system we will discuss is perfect for land with a small amount of livestock (for instance, 1 - 10 horses) and small- to medium-sized farms or orchards. Improper organic waste disposal can lead to pest problems, create health issues for livestock, and contaminate local water sources. There are so many benefits to this method of composting! Adding compost to your soil conserves water, mitigates erosion, sequesters carbon, and helps your plants thrive.
This workshop will address how to use an ASP to compost manure, crop residues, and food scraps. This presentation will also include a case study of Solana Center’s ASP composting system as an example of a successful ASP composting system
In this workshop, we will cover
Benefits of composting manure and other on-farm materials
How to use ASPs to simplify composting and reduce the need for management
How to create the best system for your needs, get prepared for composting success, and what to add to your pile for best results
Managing pest and smell concerns with neighbors
Ensuring compliance with San Diego County ordinances and/or Healthy Soils Program requirements
Whether you own livestock, a farm, a large property, or simply want to expand your composting knowledge, we welcome you to join our workshop at the Ramona Grange.
Residents of unincorporated County of San Diego receive preferential registration. All others will be placed on a waitlist and apprised of space available 1-2 weeks before the workshop.
BEFORE REGISTERING, please enter your address here to check your residency. You can select the County of San Diego Residents ticket option ONLY if your jurisdiction boundary result is exactly “S.D. COUNTY.” All others must select the waitlist option.
Made possible through generous funding by:
Thanks to our host Ramona Grange

In-Ground Composting with Worms Workshop - Valley Center
Composting with worms, also known as vermicomposting, has benefits for everyone, whether you want to divert kitchen scraps from the landfill, compost in small spaces, or create a natural fertilizer for your plants. In-ground worm composting is especially suited to San Diego County’s climate and is more resilient to the temperature extremes we face, especially during dry, hot months. Join us at Bates Nut Farm to learn how to start and maintain a happy home for red wiggler worms.
All pre-registered attendees who are residents of unincorporated San Diego County can receive a free kitchen scraps container.
In this workshop, we will cover:
Benefits of composting with worms
Benefits of using an in-ground worm bin
Tools, materials, and steps to start an in-ground worm bin
How to feed your worms and which foods are suitable
Troubleshooting and maintaining all worm bin styles
Harvesting and using finished castings
Benefits of in-ground vermicomposting include:
Greater resistance to temperature extremes
Increased soil aeration in garden beds
Save money on purchased worm castings and soil amendments
Lower your contribution to landfills
Increase soil health & soil microbiome
Increase water retention in soil