Phyllanthus mirabilis, commonly known as the butterfly plant, is a rare and visually striking caudiciform native to Southeast Asia. It features a swollen, woody caudex at its base that stores water and gives the plant a bonsai-like appearance. Delicate branches extend from the caudex, bearing pleated, oval leaves that exhibit a fascinating behavior—folding closed each evening like butterfly wings, then reopening with the morning light.
This plant thrives in bright, indirect light with some gentle morning or evening sun. It prefers warm temperatures between 15–28°C (59–82°F) and moderate to high humidity. During its active growing season in spring and summer, the soil should be kept lightly moist, watering when the top half of the soil begins to dry out. In autumn and winter, as the plant enters dormancy, reduce watering and allow the soil to dry more between waterings.
Phyllanthus mirabilis does best in a gritty, fast-draining soil mix—such as cactus soil amended with perlite, sand, or pumice—and requires a pot with excellent drainage to avoid root rot. It benefits from monthly feeding with a diluted balanced fertilizer during its growth phase but does not require heavy fertilization.
With its unique form, nighttime leaf movement, and sculptural caudex, Phyllanthus mirabilis makes an exceptional and conversation-worthy addition to any rare plant collection. It’s particularly well-suited for collectors of caudiciforms, bonsai-style specimens, or unusual houseplants.
