OK I know this isn't a vegetable growing out of rock, but a fern is still a plant, and a plant is all I need as an example for this post. Many people have been lied to all of the or lives and sadly they reject the truth when someone or something shows it to them... My recent post about how I don't like raised beds got a few folks worked up because they only know what "the books" have told them and they have chosen, weather it be intended or not, to ignore mother nature, who just so happens to be a far better gardener than any of us could ever be! Some folks belive that since they live on ground that is almost solid rock or extremely hard compacted clay that they can't have a normal garden and that it needs to be in a raised bed with store bought soil... Well the truth is you CAN! Open you eyes and take a look at nature. The fern is growing out of a rock. Weeds grow in your gravel driveways, and things always seem to sprout up in the cracks in the side walks from what I've noticed while just living the short 19 years of my life. To think you can't grow an amazing garden with pure rock or hard clay as your soil is nothing but a total disconnection! So if you still don't understand how it can be done, its really simple, and I'm more than happy to be explaining it right now... When a cover (wood chips, needles and leaves, straw, grass clippings, EVEN MOSS! ... and of course the list goes on and on) is applied to anything it actually begins working the environment beneath it and turning it into a living habitat that can sustain life such as the life of this little fern in the rock! All one would have to do to create an amazing garden whether it be on their rock, in their rocky soil, or in their hard compacted clay soil is to simply as a covering! Put down 2-3 inches of compost then put a couple inches of wood chips down on top and you're set! You don't need to build boxes and waste a bunch of money on soil that isn't nearly as rich in minerals as your rock your growing on lol. Anyways for those that didn't understand the simplicity of appling a cover to grow a garden in bad conditions, I hope this maybe slightly opened your eyes.