I'm not sure . I've planted stone fruit trees once they were taller then a foot and they went okay. Just had a dripper on them. But we are different climate to you. If its a variety that goes dormant then I think its safe to plant in the ground once that happensI love trees and I hear apple trees get to be 30 ft so I’m like yay well if I manage to keep them alive that long.
I just wanna know if it takes a whole year of growing them in a pot before I transplant them to their permanent ground spot or if they’ll be ready by fall to transplant, but I guess I’ll find out when I place em in pots.