The watermelon houseplant (Citrullus lanatus var. citroides) is a unique and captivating addition to any indoor gardening space. Belonging to the Cucurbitaceae family, this plant produces miniature watermelons approximately 3 inches in diameter that are non-toxic but inedible. Its cascading vines, adorned with attractive foliage, create a lush and visually appealing display. The plant thrives under bright, indirect light and prefers well-drained soil that is kept consistently moist.