Extremely difficult to propagate. Macs on Geneva 65 survived the severe winters in Quebec. Malling 9 Produces a fully dwarfed tree with good fruit size and color. Precocious and very productive. Requires a permanent support system.
Irrigation is very helpful.
Resistant to crown rot. Susceptible to nematodes, woolly apple aphid, and fire blight. As good as the new Geneva series is, M.9 is still going to be around for a long time. Just a little more vigorous than M.9. Resistant to collar rot, but susceptible to fire blight and woolly aphids.