How do i start a plumb seed to grow indoors so that i can transplant it later outdoors?

i am trying to plant plum trees from seeds i obtained from a neighbors orchard.

How do i start a plumb seed to grow indoors so that i can transplant it later outdoors?
Starting a plum stone into growth is fairly easy.

Lightly cracking the case,so the kernel is exposed,then suspending the stone in water on a well lit windowsill.When a shoot appears,transfer to a small pot of J.I or similar compost and it should grow away.

Plum trees need a lot of space and are normally grafted onto a dwarfing rootstock.Problems can arise because some varieties are not self fertile and need another plum to act as a pollinator.

If your neighbours trees sucker,try and obtain one-it's quicker and easier than growing from seed.