Rose from Brevard North Carolina would like to know is it safe to eat blended watermelon seeds? By blended, I assume she means in either a blender or a food processor. The answer is yes, it is actual quite healthy. Watermelon seeds contain many vitamins and minerals, and are perfectly safe to eat. They will not grow a watermelon plant in your stomach either. Most of the time they are lightly chewed or swallowed whole while eating watermelon, which means many of their healthy properties will not be fully absorbed. Blending them however will allow them to be fully absorbed by the body, and is actually the healthiest way to consume them. When you blend them use a high pulse rate so that they are completely ground up. They do have a hard texture, which will make drinking them uncomfortable unless they are completely pureed to an almost powder like consistency.