In winemaking, organic is a highly regulated term and can refer to either the wine as a whole, or the grapes in the wine. "Organic wine" is the more strict definition of the two.
“Organic Wine” - Certified by the USDA with strict regulations - all ingredients going into the wine must be certified organic. No sulfites may be added, although naturally occurring sulfites are permitted. 

“Organically Grown Grapes” - Less intense than organic wine, these bottles are made entirely from certified organic grapes. Additional ingredients that go into the wine may be used (i.e. yeast). Sulfites are limited to 100 parts per million or less.