The Philodendron longilobatum ‘Lelano Miyano’ is known for its elongated, deeply lobed, sword-like leaves. Native to Brazilian rainforests, its symmetrical foliage contributes to its refined appearance. Named after Hawaiian naturalist Leland Miyano, this plant’s striking look makes it a prized addition to many collections.
Philodendron Lelano Miyano Cultivation
Light Requirements
Thrives in bright, indirect light. An east or north-facing window provides suitable gentle morning light. For west or south-facing windows, sheer curtains diffuse intense afternoon sun, preventing leaf damage. Insufficient light causes stretched growth and smaller leaves; excessive direct sun scorches foliage, leading to yellowing or brown edges.
Watering Practices
Allow the top two inches of soil to dry out before watering. This prevents overwatering (leading to root issues) and underwatering (causing plant stress). Watering frequency depends on temperature, humidity, and potting mix.
Soil and Potting Medium
This philodendron needs a well-draining, aerated potting medium. A suitable mix includes orchid bark, perlite, and peat moss or coco coir. This combination supports healthy root development by allowing adequate airflow and preventing waterlogging. A chunky aroid mix provides necessary drainage and aeration.
Temperature and Humidity Needs
Prefers stable temperatures (65-85°F / 18-29°C) and high humidity (minimum 60%). Indoors, use a humidifier or a pebble tray (ensuring the pot doesn’t sit in water). Consistent humidity helps maintain foliage and encourages aerial root development.
Fertilization Guide
During active growth (spring and summer), fertilize every two to four weeks with a balanced liquid fertilizer, diluted to half or quarter strength. Reduce or pause fertilization during cooler, dormant months (autumn and winter) as growth slows. This provides necessary nutrients without overwhelming the plant.
Repotting Your Philodendron Lelano Miyano
Repotting is necessary when the plant outgrows its container, indicated by roots emerging from drainage holes or slowed growth. This typically occurs every one to three years. Repotting provides fresh nutrients and prevents root-bound conditions, where dense roots restrict nutrient uptake. The best time is during spring or early summer, when the plant is actively growing and recovers quickly.
Choose a new pot one to two inches larger than the current one, ensuring adequate drainage. This prevents excessive moisture retention and root issues. Water the plant thoroughly the day before repotting. Gently remove the plant, inspect roots, and trim any damaged or mushy ones. Place fresh, well-draining soil mix in the new pot, position the plant at its original depth, and fill with more soil, gently firming to remove air pockets. After repotting, water the plant to help it settle.
Propagating Philodendron Lelano Miyano
Propagating is effective using stem cuttings. Successful propagation relies on identifying stem nodes, where new roots and leaves originate. When taking a cutting, ensure it includes at least one node and is four to six inches long, cutting one to two inches below a node.
Cuttings can be rooted in water or a moist substrate.
Water Propagation
Submerge the node in water, keeping leaves above the surface. Change the water every few days to prevent stagnation. Roots should form within a few weeks; once they are at least an inch long, transfer the cutting to soil.
Soil Propagation
Plant the cutting directly into a well-draining, airy potting mix, ensuring the node is buried. Keep the soil consistently moist, but avoid overwatering.
Regardless of the method, place newly propagated cuttings in a warm area with bright, indirect light to encourage successful rooting and growth.
Addressing Common Plant Challenges
Even with consistent care, issues may arise. Yellowing leaves often signal overwatering or inadequate drainage, potentially leading to root rot. Check soil moisture and ensure proper pot drainage. Conversely, yellowing older leaves might indicate insufficient watering.
Browning leaf edges or tips often indicate low humidity or underwatering. Increase ambient humidity with a humidifier or pebble tray. Over-fertilization or excessive direct sunlight can also cause brown spots or crispy edges. Drooping leaves result from inconsistent watering (too much or too little) or environmental stressors like temperature fluctuations or low humidity. Check soil moisture and provide a stable environment for recovery.
Pests like spider mites and mealybugs can affect the plant.
Pests
Spider mites create fine webbing and cause yellow speckling on leaves, thriving in dry conditions. Wiping leaves with a damp cloth and applying neem oil or insecticidal soap can manage infestations. Mealybugs appear as white, cottony masses, often in leaf axils, and can be removed by dabbing with rubbing alcohol or insecticidal soap.
Fungal Issues
Fungal issues, such as root rot or leaf spot, stem from overly wet conditions or poor air circulation. Ensuring well-draining soil and avoiding wetting foliage when watering helps prevent these problems.