Native to South America, the Peperomia argyreia, Watermelon, commonly known as a watermelon begonia, is a sight to behold. With leaves that look just like the rind of a watermelon, this plant is great for beginners looking for attractive house plants. It is low growing, only reaching 6 to 8-inches in height. While short, green flowers do appear, gardeners often trim them off in favor of the fleshy, dark green leaves. For the best color, keep this plant in partial sunlight, ideally near an east-facing window. Allow the soil to become try before adding water and take care not to over-water.