A non-profit organization created by the owners of the state's wineries. Details the history of the industry, list of wineries, upcoming events, ...
www.newjerseywines.com/ - 15k

The Washington Association of Wine Grape Growers advocates for the Washington wine growing industry by educating, promoting, representing, ...
www.wawgg.org/ - 9k

gets some interesting googles

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Note added at 5 mins (2008-05-14 08:39:03 GMT)
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small-scale winegrower

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Note added at 12 mins (2008-05-14 08:45:57 GMT)
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perhaps better "traditional winegrower"?

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Note added at 22 mins (2008-05-14 08:56:21 GMT)
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"farmer-winegrower"

Just a comment about "artisanal" which so often causes us headaches.
The news this morning reported the stabbing of a prison officer with a "couteau artisanal". Since I very much doubt it was a bee-encrusted handcrafted masterpiece from France's hilly central regions, it suspect it was an IMPROVISED knife, things traditionally made from broken hack-saw blades liberated from prison workshops.

This goes here so that, with luck, someone looking for a translation of "artisan(al)" will stumble across it.

Re. your term, it might depend just how "artisanal" he is. In NZ they speak of "boutique wineries" producing high-quality, low-volume wines. "Boutique winemaker" or "boutique-wine maker"?

Of course the question is , is he a wine maker or a wine grower? I doubt there is much point or money in being a boutique wine GROWER unless one is backed up by or is oneself a boutique wine MAKER.

Any luck Googling his name, if your text does not elaborate?

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Note added at 18 mins (2008-05-14 08:51:46 GMT)
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This has become an answer, in case no-one noticed (another plea to the ProZ powers-that-be: how about a rethink so answerers can change the title term AND their confidence level?). Or maybe the rest of you are better organized than me!

VIGNERON
Personne qui cultive la vigne ET ELABORE LE VIN (viticulture et vinification)
http://www.parlonsvin.com/glossaire.htm

vigneron indépendant. Viticulteur qui ELABORE SON PROPRE VIN, en utilisant généralement les méthodes traditionnelles de sa région. ...
www.trinor.com/WineXX/WineGloss-C/WTermCoseco.html


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Note added at 22 mins (2008-05-14 08:56:24 GMT)
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What I meant was, is it made clear if he produces wine from the grapes he grows (I suspect he does) or just sells them to a vintner who does the wine-making (which I very much doubt). There might be GROWERS who produce in large quantities and sell their grapes to the large wine-making companies, but they would not boast about it. Nor would the small growers whose grapes get lumped into the local wine from the growers' cooperative. "Artisan" implies to me that he grows the grapes and produces a wine, quite probably sold exclusively from the estate.

just one option