2. Jewel corn
This is not a Photoshop masterpiece or a set of shiny pearls carefully attached to an empty cob. However hard you might find the concept, this is a real type of corn, obtain by hybridization of several corn varieties. It is called Glass Gem corn, and the name makes justice to the appearance.
The story behind this special corn is fascinating and reached light only due to the efforts of one man, an Oklahoma farmer named Carl Barnes. Corn colored differently than the one we are used to have existed on American soil for quite some time. Rendering lower rates of productivity, it was gradually replaced.
A lot of effort was put in finding seeds of each type. Once that was achieved, it was just a matter of putting to work the well-known secrets of agriculture. It is cool to know that seeds to grow your own rainbow colored corn also exist for sale, and the plant has no special requirements.