[RenRav]

The trees are over 50 years old though, even setting up new gmo orchards would take a long time.

[CriticalCathed]

Would grafting help?

[simcop2387]

To an extent I'd bet, but the base of the tree would still be vulnerable. Even then, I'd expect that it'd be a few years to a decade for the new grafts to really be able to produce anything significant.