After our first year or two in bonsai, most of us have heard of the reason for in-ground growing: Put a bonsai-to-be in the ground, where the roots can ramble, and it will bulk up more quickly than it would in a pot. (Sometimes much more quickly.) But what do you do when you don't have room for a growing bed, even a small one? When your yard ("garden" to my British friends) isn't even big enough to win the respect of a postage stamp?
