The “Slime Lily,” with its intriguing common name, is a distinctive plant that offers an unusual addition to any plant collection. Its unique appearance captivates, making it a subject of interest among plant enthusiasts.
Understanding the Slime Lily
The plant commonly known as the “Slime Lily” is Tacca chantrieri, also called the Black Bat Flower or Devil Flower. This tropical perennial belongs to the yam family (Dioscoreaceae) and is native to Southeast Asian rainforests, thriving in the understory with filtered light and high humidity.
Tacca chantrieri is distinguished by its unique inflorescence, which resembles a bat in flight. The flowers are a deep blackish-purple or chocolate brown, reaching up to 12 inches (30 cm) across. Long, whisker-like bracts, extending up to 10 inches (25 cm), add to their unusual appearance. These features, combined with its dark coloration, likely inspired the “slime lily” name.
Optimal Growing Conditions
The Slime Lily thrives in conditions mimicking its native tropical rainforest environment. Bright, indirect light is essential; direct sunlight can scorch its leaves. An east or south-facing window, providing filtered light, is often ideal.
Well-draining, rich, and slightly acidic soil is necessary. A suitable potting mix includes peat, perlite, and compost, or a blend similar to orchid mixes, ensuring moisture retention and drainage. Keep the soil evenly moist but never waterlogged to prevent root rot. Allow the top inch (2.5 cm) of soil to dry slightly between waterings.
Maintain warm temperatures, ideally 70–85°F (21–29°C), as temperatures below 55°F (13°C) can be harmful. High humidity, between 60-80%, is also important. Achieve this with a humidifier, by grouping plants, or by placing the pot on a pebble tray filled with water. A humidifier provides more consistent moisture than misting.
During the active growing season (spring through early fall), fertilize regularly. Apply a balanced, water-soluble fertilizer every two to four weeks. Reduce or withhold fertilization during the winter dormant period.
Common Challenges
The Slime Lily can present a few common challenges for growers. Pests like spider mites, mealybugs, and scale insects can affect the plant. Regular foliage inspection aids early detection; these pests can be managed with insecticidal soap or neem oil, and by increasing humidity for spider mites.
Overwatering is a frequent issue, causing fungal problems like root rot, which appears as wilting or yellowing leaves despite moist soil. Proper soil drainage and allowing the topsoil to dry slightly between waterings prevent this.
Leaf yellowing can indicate overwatering, underwatering, or a nutrient deficiency. Brown leaf tips often point to insufficient humidity, common in drier indoor environments. A lack of flowering suggests inadequate light exposure or improper care.
Propagation
Propagating the Slime Lily is primarily achieved through rhizome division, which is the more successful method. This process is best done in spring during active growth or when repotting. Remove the plant from its pot and separate the rhizomes, ensuring each section has at least one healthy growth bud and roots. Plant the divided sections in a well-draining soil mix and water sparingly until new growth appears.
Seed propagation is also possible, though more challenging and time-consuming. Clean seeds of their sticky pulp, air-dry for a few days, then soak in warm water for about 24 hours before sowing. Sow them shallowly in a warm, moist, seed-starting mix, maintaining temperatures around 80-85°F (27-29°C). Germination can be slow, taking several weeks to many months, requiring patience.