" Winegrowing lore said rosebushes were planted to serve as early-warning indicators of sickness in the vines. They supposedly were also a leftover tradition from the days when horse-drawn plows worked the vineyards—the thorns encouraged the beasts to make wide turns and thus reduce the potential damage to the stakes and wires that supported the rows. "

― Christie Ridgway , Can't Hurry Love (Three Kisses, #3)