GRAD® Millardet et de Grasset 420A, Clone 1
In GRAD's opinion, and based on nearly two decades of observation, the best rootstock for use in close-planted high quality vineyards, and in particular those planted to the Pinot varieties. The GRAD®1 clone is free of detectable virus by PCR test, and was specially selected, through ten years of trials, for its superior robustness and exceptional level of tolerance for dry soil conditions.