Winery Directory

O'Neill Vintners & Distillers is a wine and spirits producer founded in 2004 with operations in Parlier, California. The company operates vertically integrated vineyards, wineries, and distilleries, producing both national wine brands and custom exclusive brands for retailers and restaurants, along with brandy, spirits, and bottling services.

Opus One is a winery located in Oakville, California, founded as a collaboration between two families to produce a singular wine that expresses the character of each vintage and the terroir of its vineyards. The estate offers multiple tasting experiences that celebrate its French and American heritage.

Orin Swift Cellars and Winery is located in St. Helena, California, where it opened in 2013. The winery, founded by Dave Phinney, produces a range of wines including red and white varietals, with notable releases such as The Prisoner, Papillon, Abstract, and Machete. The tasting room, housed in a historic downtown St. Helena bank building, offers four distinct tasting experiences.

O'Shaughnessy Estate Winery is a family-owned estate winery spanning three Napa Valley appellations: Oakville, Howell Mountain, and Mount Veeder. The 120-acre Howell Mountain property features 42 acres of 30-year-old vines and estate caves. The winery has produced wines since its first harvest in 2003 and operates on organically farmed practices.

OVID Napa Valley is an estate winery located on Pritchard Hill in St Helena that produces small-quantity, estate-grown wines including Syrah. The winery focuses on wines of place and precision, with releases that evolve over time, and offers wines exclusively through direct allocation.

Palmaz Vineyards is a Napa Valley estate winery operated by the Palmaz family, known for producing Cabernet Sauvignon, Chardonnay, Riesling, and other varietals. The winery features a gravity-flow facility housed within an 18-story cave extending into Mount George, and operates vineyards across three elevation levels on the property. The estate combines technology-driven winemaking methods with traditional techniques.

Pangloss Cellars is a winery located on Sonoma Plaza in a restored 1902 building, featuring handcrafted, limited-production wines from Sonoma County's diverse grape varieties and premier appellations. Winemaker Erich Bradley crafts wines showcasing terroir from the fog-kissed Coast to volcanic Moon Mountain, available exclusively direct from the winery. The tasting lounge offers wine tastings and locally-sourced food pairings.

Papapietro Perry Winery is located in Dry Creek Valley and specializes in small lots of handcrafted, single-vineyard designate Pinot Noir, Zinfandel, Chardonnay, and Rosé of Pinot Noir from Sonoma County grapes. The winery offers seated tastings on its extended patio overlooking Dry Creek Valley and was recognized as Best Red Wine in the 2025 Press Democrat Best of Sonoma County Readers' Choice Awards.

Paradigm Winery is a family-owned estate located in Oakville, California, founded in 1991 on a 55-acre property. The winery was established by Ren and Marilyn Harris, who farmed grapes on the land for 16 years before beginning wine production. Founding winemaker Heidi Barrett, a UC Davis graduate and Napa Valley native, has crafted every vintage through 2024 using minimal intervention to express the vineyard's terroir.

Paradise Ridge Winery is a 155-acre estate winery located in Santa Rosa overlooking the Russian River Valley. Founded in 1994, the winery produces carefully selected varietals suited to the region's climate and terroir, and features a sculpture garden among its grounds. The estate operates as both a winery and event venue, offering wine tastings and hosting weddings and private events.

Paraduxx is located at 7257 Silverado Trail in Napa, California. The business operates as part of The Duckhorn Collection and offers wines including Cabernet Sauvignon, Merlot, Pinot Noir, Chardonnay, Sauvignon Blanc, and rosé and sparkling options. The estate features a tasting room and experiential offerings for visitors.

Patco Brands is a beverage producer based in Fairfield, CA that manufactures beer, wine, and spirits across over 20 production facilities globally, producing over 6 million cases annually. The company operates national brands and provides private label beverage development and production services.

Patz & Hall is a Sonoma winery that has produced small-lot Pinot Noir and Chardonnay wines for more than 35 years, working with California grape growers through long-standing relationships. The winery focuses on single-vineyard wines selected for character and climate, including offerings from Hyde Vineyard and Gap's Crown. Located in Sonoma, the winery offers tasting experiences and membership programs.

Paul Hobbs Winery is located in Sebastopol, California and produces wines including Pinot Noir from estate and grower-partner vineyards. The winery crafts wines across multiple tiers—Appellation, Vineyard Designate, and Cuvée collections—from diverse vineyard sites with varied soil types and slopes.

Paul Lato Wines is located in Santa Maria, California and produces Pinot Noir, Chardonnay, Syrah, Grenache, Cabernet Sauvignon, and white and rosé wines. The winery sources from multiple vineyards including Bien Nacido, Solomon Hills, Larner, and Pisoni, employing minimal intervention winemaking practices based on physiological ripeness and artisanal techniques.

Peachy Canyon Winery is a family-owned business located on the west side of Paso Robles, operating since 1988. The winery produces hand-crafted Estate Zinfandels and 15+ small-batch Rhône and Bordeaux varietals from meticulously farmed vineyards. The tasting room is housed in the historic Old Bethel Schoolhouse on Highway 46 West and is the 10th oldest winery in Paso Robles.

Peake Ranch is a winery located in the Sta. Rita Hills of Buellton, California, producing Pinot Noir, Chardonnay, Syrah, and Grenache. The estate operates three distinct vineyard properties and benefits from sun-drenched days and Pacific fog-cooled nights that extend grape hang time. The winery was established by John and Gillian Wagner and emphasizes working in concert with nature to achieve exceptional wines.

PEJU Winery is a family-owned winery in Rutherford, Napa Valley, founded in 1983 by Tony and Herta Peju. The estate produces a range of varietals including Cabernet Sauvignon, Cabernet Franc, Chardonnay, Sauvignon Blanc, and blends, with current operations led by daughters Ariana and Lisa and winemaker Sara Fowler.

Pestoni Family Estate Winery is a multi-generational producer in Napa Valley with vineyards spanning Howell Mountain, Rutherford, and Quackenbush Mountain. The family has operated the estate for over 130 years, employing regenerative practices across three estates while producing wines from their volcanic hillside and basalt soil vineyard sites.

Peter Michael Winery is a family-owned producer of single-vineyard estate wines across three locations in Sonoma and Napa counties. Operating since 1982, the winery cultivates Chardonnay, Sauvignon Blanc, Pinot Noir, and Cabernet Sauvignon from mountain vineyards at elevations up to 2,000 feet, emphasizing land stewardship and classical winemaking with minimal cellar intervention.

Phase 2 Cellars is a full-service, vineyard-to-bottle custom crush and bottling facility located in San Luis Obispo, California, with 80,000 square feet and capacity for 13,000 tons of wine production. The facility offers winemaking services ranging from 200 to 6,000 tons, private label services, advanced bottling capabilities for still and sparkling wines, and in-house laboratory analysis. Granted organic certification by CCOF in 2024, Phase 2 Cellars also provides compliance support, label design, and administrative services for wine producers.

Piazza Family Wines is a family-owned boutique winery in Santa Barbara County that operates two estate vineyards: Bella Vista Vineyard in Ballard Canyon (planted 2001, CCOF-certified organic) and Mt. Carmel Vineyard in the Sta. Rita Hills (planted in the 1980s). The winery produces Pinot Noir and Chardonnay from Mt. Carmel and Rhône, Burgundian, and Italian varieties from Bella Vista, using a minimal intervention winemaking approach.

Picayune Cellars is a small Napa winery located in downtown Calistoga owned and operated by winemaker Claire Ducrocq Weinkauf. The winery produces white wines including Sauvignon Blanc and Albariño, rosé, Pinot Noir, and Chardonnay, alongside French champagne. The tasting room doubles as a curated boutique featuring wines, apparel, jewelry, and goods from France and around the world.