Independent Grape Growers - Paso Robles Area
Gold Members

April 2024 Seminar: Healthy Soils

April 17, 2024
1:00 PM - 3:00 PM

Seminar Topic: Healthy Soils

  • Date/Time: April 17, 2024, 1-3pm
  • Venue: Castoro Cellars, 1315 N. Bethel Road, Templeton, 93465


  • Steve Vierra, Director of Vineyard Operations, Derby Wine Estates
  • Cristy Christy, Owner/Operator, Black Diamond Vermicompost




Whether farmed conventionally, sustainably, organically, or regeneratively, healthy soil is a foundational element to any successful vineyard. 

  • Hear how vines uptake nutrition from soil and the critical symbiotic relationship between plants and soil microbes.
  • Learn how to test for, build, and maintain the ideal growing media to maximize wine grape quality and production.
  • Learn the best ways to balance vine nutritional needs for the immediate growing cycle, replenish depleted nutrients from prior years, and build sustainable soils with any farming style.

Our Speakers:

Steve Vierra started his viticultural career in 1996 while an undergrad student at Cal Poly. He graduated in 1999 with a degree in soil science, and joined the Vineyard Professional Services company. While there, he became a Certified Professional Soil Scientist and designed and installed a number of well-renowned Paso Robes vineyards. His vintage experience spans over 2 decades, including time in New Zealand, Chile and Australia. 


Cristy Christie has been producing commercial vermicompost in Paso Robles since 2010. Her focus is on feeding the worms a high quality feedstock to produce a biologically active compost with diverse micro-organisms for small farms and vineyards on the Central Coast. Black Diamond Vermicompost was chosen for current research growing crops using lunar soil for future space exploration.

As always, our seminars are FREE for Members and just $30 per person for Guests.  Feel free to invite other vineyard owners and managers that you think might be interested in the topics this month.




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