They've been sustainably farming over 400 acres in Oak Knoll since 1968, perfecting Riesling and Chardonnay while dreaming up their quirky white blend Quandary, all in a jaw-dropping 1886 gravity flow winery building.
Checked against the winery’s website on September 3, 2026.
When to visit Trefethen Family Vineyards
Monday10:00 AM - 4:30 PM
Tuesday10:00 AM - 4:30 PM
Wednesday10:00 AM - 4:30 PM
Thursday10:00 AM - 4:30 PM
Friday10:00 AM - 4:30 PM
Saturday10:00 AM - 4:30 PM
Sunday10:00 AM - 4:30 PM
Good to know about Trefethen Family Vineyards
Yes, Trefethen Family Vineyards has a tasting room open to visitors. Visits are by reservation, so book ahead rather than dropping in.
Trefethen Family Vineyards focuses on Cabernet Sauvignon, Merlot. Signature bottles include 2021 Cowgirl and the Pilot, 2021 Cabernet Sauvignon, 2021 Merlot. When booking a tasting, ask which current release best represents the estate's style.
A tasting at Trefethen Family Vineyards costs $45 per person, as listed on the winery's own website on September 3, 2026. Fees change with the season and the experience booked, so confirm the current price when you reserve.
Yes, Trefethen Family Vineyards has food available alongside tastings. Having food while tasting reduces the effect of alcohol and helps you taste more accurately. Worth taking advantage of when offered.
Yes, Trefethen Family Vineyards welcomes dogs. Policies usually cover outdoor areas only and expect dogs on a leash. Call ahead if you're bringing more than one, or if the weather is pushing everyone indoors.
Yes, Trefethen Family Vineyards offers vineyard tours. Options include: Winery Flights, Wine & Food, Virtual, Private Groups and Historic Winery. Tour spots fill before standard tasting reservations. Book your tour and tasting together when you reserve.
Trefethen Family Vineyards is in Napa, CA, in the Napa Valley wine region. Phone: (707) 255-7700. Confirm hours before visiting. Winery schedules vary seasonally.
Trefethen Family Vineyards was established in 1968, giving the estate 58 years to develop its wine program and farming practices.
The winemaking at Trefethen Family Vineyards is led by Hailey Trefethen, Lorenzo Trefethen, Janet Trefethen, John Trefethen, Gene Trefethen, Katie Trefethen. Visiting during special events or release weekends is often the best chance to meet the winemaking team and ask questions about specific vintages or techniques.
Monday: 10:00 AM – 4:30 PM | Tuesday: 10:00 AM – 4:30 PM | Wednesday: 10:00 AM – 4:30 PM | Thursday: 10:00 AM – 4:30 PM | Friday: 10:00 AM – 4:30 PM | Saturday: 10:00 AM – 4:30 PM | Sunday: 10:00 AM – 4:30 PM Hours may vary seasonally. Confirm by phone or on their website before visiting.
