Rhubarb is one plant of whose potential we are perhaps yet to be fully aware of. Responsible for some of the finest tasting puddings, rhubarb can also be grown easily at home. The stem of this plant is eatable and tastes fantastic while the roots work great as a laxative and has been in use as a poop-softener for over 5000 years. However, there’s a twist to the story. For the leaves of rhubarb plants is known to contain a poison as well as a corrosive acid, which becomes all the more potent when mixed with water and soda.