I think TheGreenFog hit the nail on the head (though my only knowledge about growing at this point is from reading, not experience.) I'd imagine that if you didn't care too much if you lost plants needlessly, or aren't expecting quality buds (and certainly not quantity, if any depending on how relatively poor the conditions are), then you could go ahead and grow cannabis as you would other plants.

But if you're going to go through the trouble to acquire seeds, and possibly open yourself up to prosecution, I'd think you'd want to at least get some good smoke out of the ordeal (even if it's only a little bit, just to have every now and then.)