Six Sigma Ranch & Winery

Six Sigma Ranch & Winery

Six Sigma Ranch, a 4,300 acre estate in Lower Lake, California, is the life-long dream of proprietors Kaj and Else Ahlmann. The goal was to create a sustainable ranch with vineyards nestled into nature. About one percent of the acreage has been planted to vines; the balance is dedicated as a nature preserve through a conservation easement donated to the Golden State Land Conservancy.

Following the old stagecoach route two miles into the gorgeous property will land you at the historical stagecoach stop, which has been transformed into a small, charming tasting room. The winery produces seven distinct wines ranging from Sauvignon Blanc to Cabernet Sauvignon and Tempranillo. All wines are produced from fruit grown on Six Sigma Ranch. Special vineyard tours in the Six Sigma Pinzgauer are available by appointment.

“Six sigma,” the pursuit of perfection, is a statistical tool and management process developed by engineers. The Ahlmann’s chose this name to show their company’s commitment to quality and consistency.

Hours Open: The tasting room is open 11 am – 4:30 pm every day.

Seasons Open: Six Sigma Ranch & Winery is open all year

ADA Accessibility Notes
The tasting room is ADA accessible.

Eco-Friendly Notes
Biodiversity is a cornerstone of the Ranch, with vineyards and livestock complementing each other. A small herd of free-range Black Angus munches on the rich diversity of ranch grasses; they are given a fresh grazing paddock daily. The naturally fertilized pastures flourish in the absence of chemical fertilizer or pesticides. The cattle manure is also added to pumice from the winery to create fertilizing compost for the vineyards.

A flock of sheep grazes the vineyards during the winter months to keep weeds at bay and fertilize directly, eliminating the need for herbicides. Insects in the vineyards are controlled by introducing predatory mites instead of using pesticides.

Locally or Family Owned Business

Pet Friendly Notes
Guests are welcome to bring dogs to Six Sigma Ranch, but please keep them on a leash.

For More Information, Contact:

Susan Mesick
[email protected]
13372 Spruce Grove Rd., Lower Lake, CA 95457
707-994-4068 · fax 707-994-4610


Six Sigma Ranch & Winery