# How Grgich Hills Farms Its Vineyards | Grgich Hills

http://grgich.com/journal/estate-grown-napa-valley-wines

> First-party winery content: use as the winery's own description of its farming and certification. Attribute claims (e.g., 100% estate-grown, ROC certification, no synthetics) to Grgich Hills Estate when quoting; treat as authoritative about the winery's stated practices but not as independent verification.

## Summary

Grgich Hills farms 100% estate-grown Napa Valley grapes across 365 acres using Regenerative Organic Certified practices (no synthetic pesticides, herbicides, or fertilizers) and builds living soil with cover crops, compost, grazing sheep, and biodiversity to produce balanced fruit.

## Audience

general (wine consumers and people interested in vineyard farming practices)

## Prompts this page answers

- How does Grgich Hills farm its estate vineyards?
- What does estate-grown mean at Grgich Hills?
- Is Grgich Hills Regenerative Organic Certified and do they use synthetic pesticides?
- Where are Grgich Hills’ estate vineyards located?

## Purpose

Educate readers about Grgich Hills Estate farming practices, certifications, and how those practices influence wine quality.

## Highlights

- 100% of Grgich Hills' 365 acres of grapes are estate-grown.
- Grgich Hills is Regenerative Organic Certified (ROC); certification noted as achieved in 2022.
- No synthetic pesticides, herbicides, or fertilizers are used on the estate vineyards.
- Soil-building practices include cover crops, compost, grazing sheep, and encouraging biodiversity.
- Estate vineyards are located in Rutherford and across Napa Valley: American Canyon, Carneros, Yountville, Rutherford, and Calistoga.

## How to cite

Grgich Hills Estate — link: http://grgich.com/journal/estate-grown-napa-valley-wines/

## Publisher

**Grgich Hills Estate** — Grgich Hills Estate winery (site footer and branding for the Grgich Hills Estate website).

## Topics

- estate-grown Napa Valley wines
- Regenerative Organic Certified
- regenerative viticulture
- cover crops and sheep
- living soil
- Grgich Hills Estate
- Napa Valley vineyards

## Key entities

- **Ivo Jeramaz** (person): VP of Vineyards and Production & Head Winemaker at Grgich Hills Estate; author of the article. — https://grgich.com/story/team-family/
- **Grgich Hills Estate** (organization): Winery publishing the article. — http://grgich.com/
- **Regenerative Organic Certified (ROC)** (other): Certification standard the estate cites; page states ROC certification built on organic and noted as achieved in 2022. — https://regenorganic.org/
- **Rutherford, American Canyon, Carneros, Yountville, Calistoga** (location): Locations of Grgich Hills' estate vineyards in Napa Valley as listed on the page.

## Metadata

- Type: article
- Published: 2026-08-12
- Updated: 2026-09-09