In a pot to allow you to move it to a park/countryside/forest when it gets a few years old.

If it,s one of the giant trees you have, then as above, they are far too big for the average garden, if you have a fairly large garden, you may have room for the variety adpressa, this only grows to about 20 -28 ft, and has a spread of 12 - 20 ft, the variety Prostrata is a dwarf one which grows to about 5 ft but has a spread of 6 - 10 ft, so even the smaller ones take up quite a bit of space, Derek.