G.65 was developed by Dr. Jim Cummins at Cornell University. Due to errors in tissue culture buildup of this rootstock, the U.S. distribution of this rootstock has been hindered. Tree size once thought to be about that of M.9 is now considered to be closer to M.27. The rootstock is difficult to propagate in nursery stool beds. It is susceptible to tomato ring spot virus and apple stem grooving virus.
|Origin||Malling 27 X 'Beauty' crab apple|
|Availability||Limited commercial availability|
|Tree Support Needed||Yes|
|Where tested within NC-140 or other research plantings||N/A|