Watermelon Peperomia, is known for its dark leaves, white stripes and red stems that look amazingly like a watermelon. Being a succulent like plant their leaves can retain water so watering is less frequent. All you need to know with this quirky plant is how to water it. Peperomias like to be kept on the dry side and do well in an east or south facing window. In the warmer months fertilize your watermelon peperomia every few weeks. If you have only small spaces these plants are perfect for shelving and tables.