This vining plant, commonly known as Watermelon Begonia, is related to neither the begonia nor the watermelon. But with leaf patterning reminiscent of small watermelon rinds on semi-succulent stems, it is easy to see how it took on this alternate name. This Southeast Asian native grows best in high humidity. It is an ideal terrarium plant. Watermelon Begonia can also thrive as a container plant indoors. Just be sure its soil is evenly moist and indoor temperatures are cozy. Its fast-growing nature will impress. Foliage is lush and highly patterned, with wavy borders. Tiny flowers form in clusters when this plant is grown outdoors under the right conditions. But as a houseplant, flowering is fairly unlikely. Instead, it is this plant’s smile-provoking foliage that is what really draws people in.