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Visit Our Historic Tasting Room and Tour the Ranch

Tasting room at Six Sigma Winery

Six Sigma Ranch & Winery is located southeast of Lower Lake in beautiful Lake County. The winery is less than an hour drive north of Napa Valley, and approximately 100 miles from San Francisco and Sacramento. Address: 13372 Spruce Grove Road, Lower Lake, CA 95457. (Please see hint in the Directions section at the bottom of this page). Phone: 707.994.4068

The Stage Coach Stop Tasting Room

When you come to visit our tasting room, you’ll trek down the 2-mile drive from our front gate at Spruce Grove Road. The road follows Asbill Creek, named after the first family of settlers who made the valley their home in the late 1850’s. Our tasting room is located on a site that once was a stagecoach stop, and the cozy cabin sits among century-old Valley Oak trees.
Pouring wine at the Six Sigma Tasting RoomPicnic Area
We invite our Club Members and other customers to enjoy the oak-shaded picnic area that surrounds the tasting room, the perfect spot for a relaxing lunch! Call at 707.994.4068 to learn about our special Wine Country Picnic – or click here.
Regular Wine Tasting
We are open for tasting daily from 11:00 am to 4:30 pm, and our friendly staff will introduce you to our current releases. The tasting fee is $15 per person; the charge is waived with purchase. Tasting is complimentary for Club Members. .
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Private Events

Private Wine Tasting with Cheese Pairings
We invite you to join Tasting Room Manager Mr. T for a guided tasting with cheeses perfectly paired with our wines. Call ahead to reserve your private tasting – Tuesday, Wednesday, Thursday.  707.994.4068. $59 per guest (4 – 8 guests)
Ranch to Table dinner at Six Sigma Ranch
Private Casual Meal
Let us help you plan a private casual meal, buffet style. Call 707.994.4068. Catering fee: Quoted and charged through Six Sigma Wine: Select and purchase bottles of Six Sigma wine separately Service fee: $25/hr per server.
Private Ranch-to-Table Lunch or Dinner
For an unforgettable event, book a private version of our famous Ranch-to-Table dinners, served at the table. Let us help you plan a menu based on wine and meat raised at Six Sigma Ranch. Four Courses with wine pairing (3 oz wine per course). Call Mr. T at 707.994.4068 for questions and reservations.   $125 per guest

Pinzgauer Vineyard Tours

Vineyard tour at Six Sigma RanchExplore the ranch in our all-terrain Pinzgauer! Learn about the soils and climates that make Six Sigma Ranch unique. The tour includes a visit to our high-elevation vineyard site, the Diamond Mine Vineyard.

The Pinzgauer can hold up to 10 people, so bring along a group of friends! Occasionally, we may have to reschedule tours because of rain.
Regular Tours
Regular tours are on Saturdays, at 10am, 12 noon, and 2pm. Call 707.994.4068 for reservations. Only $25 per guest (wine tasting included).
Private Tours
Private tours and tastings are available by appointment. Price: $150 for 2-10 people. Please call 707.994.4068 to book a reservation at least 24 hours ahead.

 World Class Mountain Bike Trails

High School Mountain Bikers at Six Sigma Ranch We invite Our Club Members to enjoy hiking and biking on our roads and trails, open 9 am to 4 pm. Bring up to two non-member guests.  Please fill out a Liability Release Form and drop it off in the tasting room at your first visit. For your next visits, just check in at the tasting room. You can download Liability Release Form for Hiking and Biking here pdf  or pick up the form at the tasting room. We are honored to host the Nor-cal High School Mountain Bike Championships each year for over 800 students at the ranch, and also welcome use of trails by high school athletes accompanied by coaches for training throughout the year. We have a “Trail Fund” box by the Tasting Room and welcome you to make a donation to our trail maintenance efforts. Download our Oak Guide for Fall, Wildflower Guide for August & September, Wildflower Guide for July , Wildflower Guide for June , Wildflower Guide for May , Wildflower Guide for March-April ,

Download a list of Hiking & Biking Tours: “Hiking & Biking Menu”

Download the Trail Map for Asbill Valley

Download “Hike and Bike With Common Sense”

Download Guide to the Road and Trails in ASBILL VALLEY – Trails #2 and #3

Download Guide to “THE ROADS” – Sorensen Ave. and Eagle Rock Rd. – Tour #1 + #5

“Ranch-Stays” for RVs and Trailers

Club Members and members of Harvest Host can camp at Six Sigma Ranch

We invite our Club members as well as members of Harvest Host to spend a night under the stars in their RV or Trailer. The twelve spaces on site accommodate RVs up to 45 ft., with easy “no-backing” access. (No hookups).

Call 707.994.4068 at least 24 hours ahead to make your complimentary reservation.

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Directions

Please be careful if you search “Six Sigma Ranch” to find directions. Some devices will aim at sending the unsuspecting traveler to our locked service gate on Morgan Valley Road, about 10 miles from our front gate. Search the address instead: 13372 Spruce Grove Road, Lower Lake, CA 95457.