Gardening in Small Spaces

So one of the difficult things about living in an apartment is that you have no room to have a garden.  Well, as an avid cook one of the things I want to have the most is an herb garden (just the basics, parsley, cilantro, basil, mint).  I had a pot on my patio for awhile, but it ended up taking up a lot of space.  I recently saw these planters-what a great idea!  Planters that attach to the railing.

http://www.eco-gardening.com/planters/mini-garden-railing-planter_1199_50.php