Gravity is a real jerk. Only a mean and spiteful force of nature would make people fall down and prevent them from flying. But we're not going to let it stop us from growing plants on our walls, no way. Thanks to this Dutch-made green wall kit will, defying gravity is as easy as 1-2-3. Just find some suitable plants (try asparagus, ferns, or ivy -- anything goes as long as the roots don't go too deep) and tack up the plot on the wall. There you have it. Your very own vertical garden. Power to the plants!