Six Sigma Ranch and Winery

13372 Spruce Grove Rd, Lower Lake
(707) 994-4068

Recent Reviews

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Lorrie Smith

First visit was on their paella night. It was a special treat! Staff was great! Wine is wonderful. The ranch is a must-see!

Liam Scott-Frater

Beautiful vineyard.
Did a tasting and everyone I spoke to was so kind. The setting was perfect and the wines were delicious

Coleen Lee

Always an experience! Hiking,biking, farm animals. Lavendar Farm on site too.
Casual Wine tasting , tasty cheeses & crackers. You will love this place!

Chasity Rouse

I really enjoyed this winery. Everyone was so friendly, attentive , and professional. The wine was fantastic. The winery tour around the property was so fun, and we were able to learn about the property and history of the area. Andrew our tour guide was phenomenal, and extremely knowledgeable. Our 4 year old daughter enjoyed the ride and, loved the farm animals!

Universal Appraisers

Beautiful place!

Jaima Finn

5 Stars – A Truly Exceptional Experience at Six Sigma Ranch & Winery

I’ve been a member of Six Sigma Ranch and Winery for some time now, and I can’t recommend it enough! From the moment you arrive, you’re greeted with warm hospitality—Katelyn is always there with a smile, making you feel right at home. Kaj, the owner, is not only welcoming but also incredibly knowledgeable about the wines and the winery's rich history, and he’s always ready for a great conversation.

The winery is a wonderful destination for the entire family. We love bringing our kids along—there’s so much for them to enjoy, especially feeding the friendly pig, Topper! The atmosphere is relaxed and inviting, and the staff makes it clear that they’re committed to ensuring everyone has a great time, whether you're there for wine tasting, an event, or simply to enjoy the beautiful surroundings.

One of the highlights for me is the Tempranillo—it’s absolutely outstanding. The rich flavors of this wine pair so perfectly with red meats, making it a must-try for anyone who loves a bold, full-bodied wine. The events are always well-curated, with expertly crafted wine pairings that really elevate the whole experience. Whether it’s a casual gathering or something more elaborate, they always seem to get it just right.

Katie, the winemaker, is also often at the events, and her passion for creating exceptional wines shines through in every bottle. You can tell the team at Six Sigma truly cares about creating memorable experiences for their guests. The entire experience—from the wine to the people and the atmosphere—keeps me coming back for more.

If you’re looking for a winery with amazing wine, a welcoming vibe, and fantastic events, Six Sigma Ranch and Winery is the place to be. I can’t wait for my next visit!

Dana Waldor

A great stopover in the RV overnight family

Arne Vandenbroucke

Absolutely stunning place, the ranch and lands are gorgeous. The tasting facility is very cozy and the wines taste great. Friendly service and a shop where you can buy meat, cheese and of course their wine ! We will be back !

Armand A.

This was so sigma

Les Day

My girlfriend and I recently had the pleasure of staying at the Six Sigma Ranch and Winery, a destination we eagerly anticipated as our first experience with Harvest Host. From the very beginning, the reservation process was a breeze, guided by a remarkably friendly staff member who gave us a concise and informative preview of what to expect during our visit.

Our journey to the ranch in my 32' RV was a peaceful one; Spruce Grove Rd, a charming, meandering county road, set the stage for the serene escape that awaited us. The final leg involved a 2-mile drive on a well-maintained dirt road, easily navigable in my Class C motorhome by maintaining a cautious speed.

Upon arrival, the warmth of the welcome we received from several winery personnel was genuinely refreshing. Check-in was conducted with utmost professionalism, and we were handed a detailed folder outlining all our stay essentials. We were then directed to the barn where we could choose any spot—we opted for spot #6, which offered a splendid view overlooking the winery.

The highlight of our visit was the deluxe wine tasting accompanied by a delightful charcuterie board, which we enjoyed on the winery’s porch. The staff's attentiveness made us feel special and added to the exceptional experience. As the day wound down, we purchased a few bottles of wine and retreated to our RV, soon finding ourselves enveloped in the tranquil solitude of the estate.

The evening brought a magical twist, with local wildlife appearing as we cooked dinner in the designated BBQ area at the winery. This added an enchanting element to our culinary experience under the stars. Please note that Verizon wireless service is spotty in this area, and the winery's WiFi does not reach the barn. Generators are prohibited from 10 PM to 8 AM, and no open flame campfires or cooking outside your RV are allowed.

For those who relish the quiet of the night and the sounds of crickets, this place is a slice of heaven. Six Sigma Ranch and Winery is not just a place but an experience that we eagerly anticipate reliving this fall. Whether you are a seasoned RV traveler or a Harvest Host newcomer, I recommend adding this destination to your travel list.

Steve Hines

Six Sigma never disappoints! The entire crew made us feel welcome. The charcuterie board was the perfect touch to go with their amazing wines. Thank you for a memorable afternoon.

Mathieu Pregeant

The experience was awesome after the visit of the cave followed by a wine tasting ?

Debbie Harding

Good wines - predominantly reds. The reserve Cab Sav is outstanding The staff are wonderful, so friendly and welcoming and the owner, Kai, is a top guy

Zoltan Doka

A great place to relax. A beautiful environment with beautiful hiking trails. The wine tasting is very good. A place to come back to.

Sean Ring

Six Sigma Winery is a great place to escape to and experience some great wine. The location is ideal if you are looking for peace and quite and a country setting.

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