Worms at Work: Vermicomposting Dairy Solids with Cristy Christie

In this episode of The Dairy Good Dawgs, host Sophie Dupont is joined by Cristy Christie, founder and former owner of Black Diamond Vermicompost on California’s Central Coast. They explore the science behind vermicomposting, from the partnership between worms and microbes to the critical role of pre-composting dairy solids. Cristy discusses how this process can transform manure into a biologically active soil amendment while supporting soil health, crop production, and nutrient availability. She also shares what it takes to successfully manage a commercial system, including proper feedstock preparation, environmental control, system design, and business planning. Throughout the conversation, Cristy highlights the opportunities for collaboration between dairy producers and vermicomposters, creating new possibilities for manure management, agricultural research, and locally produced soil amendments. From understanding the biology beneath our feet to building a scalable vermicomposting operation, this episode offers a fascinating look at how worms can help turn dairy solids into a valuable agricultural resource.