
Event Type: Seminar
Location: Alta Colina Winery 2825 Adelaida Rd Paso Robles, California 93446
Date: 5/8/2026

Building healthy soils is key to resilient vineyards—but how do you measure success, and which practices truly move the needle?
Join us for an in-field discussion exploring soil health from multiple angles, starting with three presentations:
Jenny Garley (Bio SI) will share insights on using sap sugar levels as a practical indicator of plant and soil health, highlighting how increased microbial activity (especially fungi) can boost photosynthesis and overall vineyard performance.
Dr. Stewart Wilson (Cal Poly) will provide a soil science perspective, grounding the conversation in the latest research and field applications.
Mike Costello (Oakville Bluegrass) will outline current funding and grant opportunities available to growers, with a focus on cover crops and soil-building practices.
We’ll then transition to a grower panel led by host Bob Tillman, sharing real-world experience implementing regenerative practices.

