Our Environment


The biodiversity of the ranch is maintained by leaving over 82% of the property as a wildlife habitat and preserved oak woodland. Planting on only a small portion of the property’s acreage preserves a diverse environment, mitigating the effects of a monoculture.

Native Vegetation

Oaks have not been removed for vineyards; they are integrated into the ranch. Nestled in the middle of the vineyard is our Ancestor Tree, the world’s largest Coast Live Oak on record and estimated to be over 600 years old


A full water reclamation system catches every drop of water used in the winery and repurposes it for irrigation on the vineyard and olives. Our tasting room is equipped with two ELKAY- EZH20 water dispensers; an additional dispenser is located at the Silo Barn event space. Since installation on February 22, 2016, these water dispensers have saved 30,000 water bottles.

Sustainable Farming

The highest quality fruit is obtained through sustainable farming practices such as manual weed removal (no herbicides), amendments of compost and cover crop, minimal tillage and conscientious water usage.


Halter Ranch believes providing for its employees is a key part of human sustainability. Employees are educated in the earth-friendly processes that are used throughout the company. An employee garden grows healthy food enjoyed by all. We donate wine to support charitable causes, in addition, we donate tours, tastings and experiences to non-profit organizations.


Winner of the Paso Robles Wine Country 2019 Environmental Award. Winner of the Environment Award, California Green Medal: Sustainable Winegrowing Leadership Awards, and gold medal winner at the Botanical Research Institute of Texas (BRIT®) 2017 International Award of Excellence in Sustainable Winegrowing.

SIP Certified

In 2008 Halter Ranch achieved SIP certification, a rigorous, third-party review which validates the winery and vineyard’s commitment to sustainable practices. When you find the SIP seal on our bottle you can be assured we are preserving and protecting the natural environment, treating our employees and community with care and have sound business practices with a long term view that protects both the present and the future.

The Future

The Ranch is equipped with Electric Car Charging stations and plans are underway for a solar power project.

The Bigger Picture

In November 2018 Halter Ranch owner and philanthropist Hansjörg Wyss pledged to donate $1 billion over the next decade to accelerate land and ocean conservation around the world. The pledge is part of The Wyss Campaign for Nature aiming to conserve 30% of the planet in its natural state by 2030. https://www.wysscampaign.org/

The property is farmed sustainably and SIP (Sustainability in Practice) Certified. Beyond that, only 18% of Halter Ranch is dedicated to grapes and structures; the rest, over 1,700 acres, is left to the natural landscape, mainly oak woodland, and wildlife corridors.