When winemakers talk about tough places to grow grapes, they usually refer to challenging soil or climatic conditions. Roll Ranch, in Southern California's Ventura County, is another story altogether. The enemy there is grapevine-killing Pierce's disease, caused by a bacterium, Xylella fastidiosa, and spread by a trio of insects: green, blue-green and glassy-winged sharpshooters.
For the full article, check out the new issue of Wine Spectator, on newsstands January 31, 2003.
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