Vickie, I was pretty haphazard about it. Planted along a fence line where a lot of mulch-y material accumulates from chickens scratching a nearby
compost pile. We get volunteers along the fence anyway (mostly tomatoes and squash), so I thought it might be a good place for germination.
Just dug out a divot a few inches deep, dropped an apple in it, covered with an inch or so (so the seeds ended up 2-4" deep), and repeated every foot or so. They're on the other side if the fence, so our chickens and goats won't disturb them, but squirrels or other rodents might. We shall see.