In 1987, Jim Summers acquired a 28-acre vineyard nestled in Knights Valley, a region located northwest of Calistoga between Mount St. Helena and the Alexander Valley. At the time, the property was predominantly planted with Merlot grapes, established 30 years earlier by Dan Duckhorn, along with some Muscat Canelli. The inaugural vintage of Summers Ranch Reserve Merlot was produced in 1992, yielding 900 cases. Today, the estate also produces Petite Sirah from the Knights Valley vineyard. Known for its warm climate, volcanic soils, and proximity to Napa Valley, Knights Valley has recently garnered increased attention for its Bordeaux varietals.

In 1996, Summers expanded their vineyard holdings by acquiring 25 acres at the intersection of Highway 128 and Tubbs Lane in Napa Valley. This property, now known as Summers Estate Wines, is home to the Villa Andriana Vineyard, named in honor of their daughter. While the estate has been fully revitalized to maximize its potential, the 40-year-old Zinfandel vines are meticulously preserved. The winery and tasting room, surrounded by over 22 acres of Zinfandel, Charbono, and Cabernet Sauvignon vines, strike a perfect balance between pleasure and productivity.

Summers' signature wine is the distinctive Charbono, a varietal believed to be an early Italian adaptation of Charbonneau, a French grape. Some argue it is closely related to the Dolcetto variety, which is commonly grown in northern Italy. The Charbono vine produces large berries that create a deeply colored red wine, known for its rich fruit flavors and low tannin content when subjected to extended skin contact during fermentation.

The Summers Estate, with its scenic vineyard views in Calistoga, California, stands as a testament to the region's rich winemaking heritage.

Dark Star Cellars is a rustic working winery and vineyard just of the West 46 and 5 min from Central Paso Robles. 

Dark Star is a rustic working winery and vineyard, conveniently situated just five minutes from central Paso Robles, off West 46 at Anderson Road and only two miles from the 101. Ample parking is available, and local ride services are just minutes away.

The winery boasts a spacious 3,000-square-foot tasting area featuring an indoor tasting bar with seating, as well as an outdoor covered patio with picnic seating and vineyard views. Visitors can choose between a regular tasting or enjoy wine by the glass to complement their own picnic.

Founded in 1994, Dark Star offers around twenty award-winning wines on any given day, including whites, rosés, creative red blends, and both common and unusual red varietals and ports. In the past four years, under new management, the winery has earned twenty-five awards, including ten gold medals with scores of 90 or above. Dark Star sources only high-quality fruit from the finest local growers and plans to introduce limited-edition estate wines soon. The winemaker selects grapes only when they have reached full maturity and flavor, ensuring that all wines are made, aged, and bottled on-site. With a limited production of approximately 3,500 cases per year, the winery maintains a close relationship with each of its 380 barrels, carefully tracking the maturation of its wines.

Renowned for its laid-back, family- and pet-friendly atmosphere, Dark Star offers tastings that include eight wines of the visitor's choice, or guests can allow the friendly and knowledgeable staff to guide them through the extensive menu. Many couples enjoy sharing side-by-side tastings to compare and contrast the nuances of different varietals or blends. Non-drinking companions can participate in activities like corn hole, observe the bee hive, or relax with the winery's cats and chickens. Depending on the day's activity level, vineyard, crush pad, and winery tours may be offered, and visitors might even have the chance to lend a hand during harvest season.

Dark Star takes pride in its quality-to-price ratio, with retail bottle prices ranging from $24 to $48. Club members receive a 30% discount at all times and enjoy 50% off case specials at least twice a year. The club commitment involves six bottles twice a year, typically costing around $150 per order, plus any applicable tax and shipping. Members can choose from the winery's selections or customize their orders.

Visitors are encouraged to check the winery's website for upcoming events. Spring and fall pick-up parties feature live bands, dancing, and buffets, while live music by local and traveling artists occurs once or twice a month. Additionally, open-mic/karaoke night takes place every Friday from 5:00 to 9:00 PM. Dark Star is also available for private parties, small weddings, and charitable fundraisers.

The Greenwood winery tasting room is definitely a head turner. This is one of those drink wineries that are beautifully crafted building designed by the owner/winemakers' father. The setting is so gorgeous, you'll wish they had lodging accommodations, Wow! and you haven't even stepped a foot inside. The tasting here is free though small. We tried about 5 wines (2 desserts) and ended up buying two bottles: a sauvignon blanc and merlot (double gold winner). Their bottles are beautifully designed with dragons as well as their wine glasses.

Bob and Sylvia Pestoni
In the mid-1990s, Bob and his wife Sylvia were presented with a rare opportunity. A small winery adjacent to their family´s Rutherford property had become available for purchase. Over the years, Bob and Sylvia had always grown grapes on their land, but they had always sold their fruit to other wine producers. They hadn´t been interested in becoming vintners before, but the acquisition of this new property renewed Bob´s admiration for his family´s business – and for his heritage. In 1994, they opened the doors to Rutherford Grove Winery and resumed making the single vineyard, hand-crafted artisanal wines Bob´s father and grandfather had created there for more than a century before him.  In 2017, in celebration of their 125th anniversary of Napa Valley winemaking, the winery was renamed Pestoni Family Estate Winery.