The Giant's Corn Seeds is one of the eight seeds that can be obtained and cultivated by the players from gardening, a feature introduced during the Ratboy's Nightmare Update.
The Giant's Corn Seeds are nearly identical to regular corn kernels in real-life. Other than that, not much can be said about its overall appearance.
Players can use this to cultivate and grow Giant's Corn if they desire to do so. Other than that, players have the option to sell the Giant's Corn Seeds to a selling vendor at a selling price of 550 gold.