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The FOG Blog

From Fog to Flora: How Cover Crops Keep Vineyards Thriving

12/10/2024

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It’s rare to see a vineyard without a lush green carpet of plants sprouting after the first rains of fall. These plants, called cover crops, are intentionally planted between vineyard rows, and they’ve become a standard practice in Napa Valley—for good reason. Cover crops provide a host of benefits that support healthy vineyards and the environment, all while looking beautiful in the winter fog.

So, what do cover crops actually do? Think of them as nature’s multitaskers. They help rainwater soak into the ground more effectively, keep the soil in place, and boost soil health by adding organic material. Some cover crops, like legumes (think peas and beans), even pull nitrogen from the air and store it in their roots, creating a natural fertilizer for the vines. This helps keep the vineyard healthy without needing extra chemicals.

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​In vineyards where the vines grow a bit too vigorously, grasses might be planted. These grasses use up extra water and nutrients, balancing vine growth. They’re often left to grow and then mowed, with some reseeding themselves for next year—less soil disturbance, more long-term benefits.

Finally, flowering cover crops like wildflowers provide a feast for beneficial insects, keeping the vineyard buzzing with biodiversity. These helpful bugs can naturally reduce pest problems, creating a healthier ecosystem. Plus, a vineyard in bloom under the morning fog? It’s a picture-perfect way to show how farming can work hand-in-hand with nature.
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Cover crops are just one of the many ways Napa Valley’s growers work to care for the land year-round, proving that excellence in farming isn’t just clear-cut—it’s often foggy!

Learn More About Cover Crops
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In October, NVG handed out free cover crop seeds at the Napa Farmers Market. They encouraged community members to plant these seeds in their home gardens to improve soil health, conserve moisture, and support pollinators, bringing sustainable farming practices into their own backyards.
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    ​​The FOG Blog is your go-to guide for understanding the growing season in Napa Valley—no farming degree required! We lift the mist on vineyard care, seasonal practices, and sustainable farming, breaking it all down in simple, easy-to-digest terms. Whether you're a wine lover or just curious about what happens in the fields, the FOG Blog will keep you informed and connected to the land behind the vines.

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