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Estate Grown, Dry-Farmed Pinot Noir, Chardonnay, & Zinfandel

Wine Tasting Experiences in the heart of the russian River valley

Our family-owned and operated estate vineyard and tasting room are located between Sebastopol and Occidental in Sonoma County’s Russian River Valley.

We offer private seated wine tastings by appointment at our estate vineyard, where guests enjoy a curated flight of six estate-grown, dry-farmed wines, including Pinot Noir, Chardonnay, and Zinfandel.

For those who want a deeper look at the vineyard, tastings can also include a guided walk through the vines, where we share how our dry-farming practices and cool-climate site shape the character of our wines.

 

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Anastasia McNabb profile picture
Anastasia McNabb
227 days ago
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What a fantastic experience we had at Square Peg!! From the moment we pulled up we could tell it was a special place! We strolled around the grounds, took in the vines and orange trees and rolling hills, then headed in to the tasting room. Surrounded by gorgeous sculptures and vivid paintings, we tasted some great wines and learned a bit about the grapes and the wine industry. Such a wonderful experience -- we will definitely be heading back for more!
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cory nelson profile picture
cory nelson
401 days ago
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Great experience for us. We were in the area mid week and trying to find a winery to check out and happened to get lucky finding Alex and Square Peg. We had a very relaxed and educational tasting, got to see the vineyard and much more. Really appreciate the experience and knowledge Alex, thank you to you and your farm!
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Phillip Jacobson
470 days ago
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My wife and I visited Square Peg Winery on May 19, 2025; it was easily one of the highlights of our time in wine country. From the moment we arrived, we were struck by the warm hospitality, stunning surroundings, including the art, and the relaxed, welcoming atmosphere that defines this hidden gem. We are big fans of the Zinfandels. They are bold yet balanced, rich in character, and beautifully expressive of the estate’s unique terroir, especially ”Big Larry.” The tasting itself was intimate, thoughtfully guided, and just a lot of fun with Alex. The winery is perched in a picture-perfect setting, with peaceful vineyard views and a sense of calm that makes you want to linger a little longer. We left with several bottles of our favorite Zinfandels, and we are already looking forward to our next visit. Square Peg isn’t just a winery — it’s a place to slow down, connect, and savor some truly exceptional wine. If you’re a fan of Zinfandel, do not miss this spot. Highly, highly recommended.
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Katie Slaughter profile picture
Katie Slaughter
603 days ago
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Brad was an absolute gem! He was very informative, educating us on every wine and grape. He also takes a mean winery pic! What a great experience.
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Lindsay Milligan
671 days ago
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Alex was incredible, funny, knowledgeable and generous. Their wines were unique and complex and the location was stunning. Alex knew so much about the region and the vines and shared so very special bottles with us. We felt deeply grateful for the hospitality.
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Lisa Perkowski
792 days ago
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We had an amazing tasting at Square Peg with Alex. This is a TRUE small family operation and their wines show it. Everything we tasted was excellent and everyone in our party of five made a purchase. Alex's mother's artwork on the wall paired with her sculptures and the windows overlooking the vines just added to the experience. The grounds surrounding the tasting room are beautiful with well kept gardens and special bonus -- a grove of redwoods! We loved this winery and will revisit if we find ourselves in Sonoma again.
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S B
802 days ago
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Love this place. So friendly and knowledgeable, great wine also. I especially like the rose. Definitely worth the visit.
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Angas Reid
856 days ago
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Nestled in the heart of the breathtaking Russian River Valley lies a vineyard that promises an unforgettable journey into the world of Pinot Noir perfection. From the moment you set foot on the property, you're greeted by the warm smile and expert guidance of Alex, a true aficionado of the grape and a shining star in the realm of hospitality. This vineyard's Pinot Noir wines are nothing short of exceptional, each bottle a testament to the rich tapestry of flavors and aromas that the region has to offer. From delicate floral notes to luscious red fruit and a hint of earthy spice, every sip is a revelation, transporting you to the sun-drenched slopes of the Russian River Valley. But it's not just the wine that makes this vineyard special—it's the experience, enhanced by Alex's passion and expertise. With a deep knowledge of the vineyard's history and winemaking process, Alex is the perfect guide on your journey of discovery. His genuine enthusiasm and warm hospitality create an atmosphere of camaraderie and joy, inviting you to linger a little longer and savor each moment. Whether you're a seasoned wine connoisseur or a curious novice, a visit to this Russian River vineyard promises an unparalleled tasting experience. Raise a glass to friendship, to great wine, and to the magic of Russian River Pinot Noir.
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justin fielder
1158 days ago
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The owner talked us through the process of making his wine from literal root to glass, and was both knowledgeable and kind. Beautiful vista and tasting room with delicious wine - the chardonnay, zin, and rose were particular highlights!
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Russian River Valley Estate Tasting Room

Located between Sebastopol and the picturesque town of Occidental, Square Peg Winery offers a relaxed private wine tasting experience in Sonoma County’s Russian River Valley. Guests enjoy award-winning estate wines grown on our dry-farmed vineyard, including Pinot Noir, Chardonnay, Zinfandel, Rosé, and Meritage.

Visitors can unwind overlooking the vineyard while tasting wines crafted by renowned winemaker William Knuttel, whose four decades of California winemaking experience include leadership roles at Saintsbury, Chalk Hill, and Dry Creek Vineyard.

Square Peg is also known as a Russian River Valley winery with an art gallery, showcasing bronze sculptures and paintings by acclaimed artist Alanna Roth.

For those searching for a boutique wine tasting experience in the Russian River Valley, Square Peg offers a welcoming place to slow down, take in the vineyard views, and enjoy warm hospitality, small-production wines, and world-class art in a peaceful setting.

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Square Peg Estate Vineyard

Square Peg Estate Vineyard sits in one of the most distinctive locations in Sonoma County’s Russian River Valley, at an elevation of 800 feet. The vineyard also lies within the boundaries of two additional American Viticultural Areas, Green Valley and Sonoma Coast, placing it at the intersection of three renowned cool-climate wine regions.

This unique overlap contributes to the vineyard’s cool growing conditions, coastal influence, and long ripening season, ideal for producing balanced, expressive Pinot Noir, Chardonnay, and Zinfandel.

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Why dry farm?

Dry farming sets our vineyard apart from those around us; our vines rely solely on rainwater absorbed and retained by the earth. This method yields grapes (and ultimately wine) with harmonious, robust, and unique character. Moreover, we believe vines cultivated through dry farming more accurately reflect the essence of our terroir.

Dry farming is also beneficial for the environment. By avoiding vine irrigation, we save millions of gallons of water throughout the vineyard’s lifespan. Managing each vine’s individual canopy does demand extra labor, but the exceptional wines we produce justify this additional effort.

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Winemaker

 

Renowned California vintner William Knuttel has dedicated over forty years to crafting ultra-premium wines in Russian River Valley, one of the most respected cool-climate wine regions in Sonoma County. His enduring approach focuses on producing multiple wine styles each vintage using classic, time-honored winemaking techniques. This depth of experience defines his commitment to creating balanced, food-friendly wines with elegance, structure, and exceptional aging potential, hallmarks of the finest Russian River Valley Pinot Noir, Chardonnay, and Zinfandel.

 

Wine

 

Square Peg Winery is a boutique, family-owned winery in Russian River Valley specializing in estate-grown, dry-farmed Pinot Noir, Chardonnay, Zinfandel, and Rosé. Our Sonoma County estate vineyard is sustainably farmed and carefully managed to highlight the unique terroir of the Russian River Valley AVA. Each wine is produced in limited quantities and offered exclusively at our Estate Tasting Room. The result is a collection of small-lot, premium wines that reflect the character of our terroir, the precision of our winemaking, and the distinct identity of this renowned Northern California wine region.

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Experience our Estate Vineyard

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We look forward to welcoming you to our Estate Vineyard Tasting Room & Art Gallery for a boutique tasting experience.

Russian River Valley

Estate Grown

Dry Farmed

Small Production

Awards & Press

 

2026 North Coast Wine Challenge:

Gold Medal – 92 Points, 2024 Estate Chardonnay

Gold Medal – 90 Points, 2023 Estate Zinfandel

2025 PROOF Magazine Awards:

Century Award, 100 Points, Square Peg Rosé With Bubbles

Best in Class, Square Peg Rosé With Bubbles 

2025 North Coast Wine Challenge:

Gold Medal – 94 Points, 2022 Estate Zinfandel

Gold Medal – 92 Points, 2024 Estate Rosé of Pinot Noir

2024 PROOF Magazine Awards:

98 Points, Double Gold Medal, 2022 Meritage – Dry Creek Valley Red Blend

2024 Sunset International Wine Competition:

94 Points Gold Medal, 2022 Estate Chardonnay

93 Points Gold Medal, 2021 Old Vine Zinfandel

2024 North Coast Wine Challenge:

95 Points Double Gold Medal, 2022 Estate Chardonnay

91 Points Gold Medal, 2023 Estate Rosé of Pinot Noir

Wine Enthusiast, May 2022:

90 Points, 2019 Estate Zinfandel

Wine Enthusiast, January 2022:

90 Points, 2019 Biglieri Old Vine Zinfandel

Wine Enthusiast, September 2021:

93 Points, 2018 Estate Pinot Noir

91 Points, 2018 Riddle Vineyard Pinot Noir

91 Points, 2019 Estate Rosé

Restaurant Wine Guide, Issue #193:

5/5 Stars, 2017 Estate Zinfandel

Wine Enthusiast, April 2021:

92 Points, 2017 Riddle Vineyard Pinot Noir

Wine Enthusiast, December 2019:

93 Points, 2017 Estate Pinot Noir

Wine Enthusiast, June 2019:

90 Points, 2016 Estate Pinot Noir

92 Points, 2018 Estate Rosé

2019 North Coast Wine Challenge:

96 Points, 2017 Estate Pinot Noir

92 Points, 2018 Estate Rosé

2019 San Francisco Chronicle Wine Competition:

Double Gold: 2015 Estate Pinot Noir

Double Gold: 2016 Estate Pinot Noir

Gold: 2015 Estate Zinfandel

2018 North Coast Wine Challenge:

91 Points, 2015 Estate Pinot Noir

jamesuckling.com, May 2017:

92 Points, 2014 Block 8 Pinot Noir

jamesuckling.com, May 2017:

91 Points, 2014 Block 1 Pinot Noir

2017 North Coast Wine Challenge:

Gold Medal, 2014 Block 8 Pinot Noir

Wine Enthusiast, April 2017:

 92 Points: 2014 Block 1 Pinot Noir

What kind of winery is Square Peg Winery?

Square Peg Winery is a small, family-owned estate winery in California’s Russian River Valley specializing in handcrafted, small-production wines. We focus on vineyard-driven wines and intimate tasting experiences designed to be personal and unhurried.

What wines do Square Peg Winery produce?

Square Peg Winery produces small-production, award-winning Pinot Noir, Chardonnay, Zinfandel, and Rosé of Pinot Noir from our estate vineyard in the Russian River Valley. Our wines are crafted to reflect the character of the vineyard and the distinctive terroir of Sonoma County

Where is Square Peg Winery located?

Square Peg Winery is located in the Russian River Valley of Sonoma County, California, within the Green Valley appellation. Our estate vineyard reflects the cool-climate character that defines this renowned wine-growing region.

Is Square Peg Winery open to the public?

Square Peg Winery welcomes guests for curated tasting experiences by advance reservation in the Russian River Valley. Each visit is hosted by an owner, and is designed to provide a relaxed, unhurried exploration of our estate wines.

Is Square Peg Winery dog friendly?

Yes. Well-behaved dogs are welcome to join you during your tasting experience at Square Peg Winery. We simply ask that dogs remain leashed and under supervision so everyone can enjoy a relaxed visit.

Are reservations required?

Tastings are hosted by reservation to ensure a personalized experience for every guest. We recommend booking in advance to secure your preferred date and time.

How long does a wine tasting experience last?

Tasting experiences typically last 60 to 90 minutes, allowing guests to explore the wines and vineyard setting at a comfortable pace.

How do I book a tasting at Square Peg Winery?

Tasting reservations can be made through our website’s booking page. Advance reservations are recommended, particularly during peak seasons in the Russian River Valley.

What is the cost of a wine tasting at Square Peg Winery?

Wine tasting experiences are $50 per guest and include a guided tasting of our estate wines, an optional vineyard tour, and time to explore the world-class artwork displayed in our tasting room. The tasting fee is refunded with the purchase of two or more bottles per person. Wine club members receive complimentary tastings.

What do your wines cost?

Our current release wines typically range from $40 to $80 per bottle, depending on varietal and vintage. Wine club members receive preferred pricing on all current releases.