Duckhorn Three Palms Vineyard Merlot 2018: Vintage Guide
A producer-sourced guide to Duckhorn Three Palms Vineyard Merlot 2018: its blend, oak aging, vineyard context and attributed winemaker notes.
This is a source-based profile of Duckhorn's 2018 Three Palms Vineyard Merlot. It brings the wine's identity, production details and the producer's description together for readers checking a bottle or comparing vintages. The tasting language is attributed to Duckhorn; Wine Country Corner is not claiming a firsthand tasting of this bottle.
Identify the wine
Check for all four identifiers when comparing a listing or bottle: Duckhorn Vineyards, Three Palms Vineyard, Merlot and 2018. A general Napa Valley Merlot, a different vintage or another grape variety is a different bottling. Also check the bottle size before comparing prices.
The winery's 2018 product page is for the 3.0-liter format. The profile here concerns the wine; that linked package size should not be mistaken for a standard bottle offer.
Production details
Duckhorn's 2018 trade sheet identifies Calistoga, Napa Valley as the appellation and estate-grown fruit as the source.
- Blend: 89% Merlot, 7% Cabernet Sauvignon, 3% Cabernet Franc, 0.5% Petit Verdot and 0.5% Malbec.
- Aging: 18 months in French oak, with 75% new and 25% neutral oak.
- Alcohol: 14.5%.
These are vintage-specific producer specifications. Keep them attached to the 2018 wine rather than copying them to other releases.
The vineyard's context
Duckhorn's estate-vineyard account places Three Palms in Calistoga and traces its vineyard-designated Merlot back to the winery's first vintage in 1978. The producer describes a warm site with lean soils and volcanic stones that retain daytime heat. That is the winery's explanation of the site's character, not evidence of a visit by this article's author.
How the producer describes it
Duckhorn's winemaker notes describe a full-bodied wine with dark-fruit, chocolate and herbal aromas, plus soft-textured tannins and earthy elements. Those notes describe the producer's assessment at release; they do not establish the condition or flavor of an individual bottle opened today. See the producer's vintage listing for the original description.
Before buying an older bottle
Ask the seller about storage history, bottle condition, provenance and the exact format. A production specification is not a condition report. Treat a price or availability shown for one format as applying only to that offer, and confirm both before purchasing.
For more context, browse Wine Country Corner's wine education articles and Napa Valley coverage.
Image credit: Duckhorn Vineyards, from its 2018 3.0-liter product listing. The representative bottle image does not show a vintage on its label; check the actual bottle when buying. Sources and specifications reviewed September 23, 2026.
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