i have one that is 5yrs. its over 10ft tall and flowering now.
in full sun, it gets a lot of organic material, and we get a lot of rain
i have 2 more that are 4yrs, but they dont get as much sun.
they are just over 5ft and no flowers yet.
if you graft to it, it can fruit in 4rd ive heard.
i grafted 1 limb so far, but i want to graft several more.
will probably wait till spring, but am looking for scions of improved varieties.