Thank you for the info. How does your Cabernet turn out? This will make my
life much easier. I just wish the farm bureau was a little more helpful
when I tried to get these questions answered 6 months ago so I would not
have done all that research into rootstocks. It seems that there are as
many wrong answers as right answers when you are dealing with government
agencies. I have been told that Cabernet does not produce quality grapes
here due to the heat? True/false? Any problems with your Merlot quality?
Know of anyone growing Tempranillo in the area? Thanks again for your help.

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Figaro,
Phylloxera is the major reason for using grafted vines. But, there is no
is Phylloxera in San Diego County, and I know of many vineyards that are
planted on their own roots. I planted Chardonnay, Merlot and Cabernet
Sauvignon vines in Ramona about fourteen years ago. These vines are on
their own roots and they are going well.
Lum
Del Mar, California, USA