Intentional Selections: Cover Crop Mixes

At Opus One, selecting cover crop mixes is an intentional process rooted in our commitment to regenerative farming and ecosystem stewardship.

We consider a wide range of factors – from biodiversity and blooming succession to sap flow availability for pollinators – to ensure each mix supports the health and vitality of the vineyard and its surrounding environment.

Each vineyard block is evaluated individually, factoring in performance history, soil structure, nutrient needs, and water drainage capacity. We prioritize species with appropriate height and root structure for our low-growing vines and favor those compatible with grazing practices. Our custom mixes include species such as crimson clover, blando brome, and diverse fescue varieties like Zorro, Molate, and Mokelumne.

Because of our vine architecture, we seed by hand beneath the row in certain vineyard blocks and use tractors for the row middles.

Taking action today for a more resilient tomorrow, we’re introducing a diverse range of cover crop species at high application rates to establish a permanent seed bank. This approach allows natural reseeding, reducing future planting needs and minimizing tractor passes.

By thoughtfully integrating cover crops into our vineyard management, we enhance soil health, increase both short- and long-term carbon sequestration, and promote biodiversity above and below ground.

Shared November 2025