About 10 years ago, I collected some cones from the base of a Scot's pine, planted the seeds and left them outside in a large pot over winter. I was surprised that about 8 germinated and steadily potted them on as they grew. Now there are several 4-5 foot high trees in large pots which I move around the garden. They're not everyones idea of a perfect Christmas tree, but I really enjoy bringing one or two inside for a couple of weeks each Christmas, knowing I have grown them.