Anthurium friedrichsthalii, also known as the laceleaf or Friedrichsthal’s anthurium, is an appealing houseplant with unique, long, narrow, rippled leaves that cascade gracefully. As an epiphyte, it naturally grows on other plants, absorbing moisture and nutrients from the air. Despite its exotic nature, managing it indoors is achievable with proper care.
Essential Care Requirements
Light
Anthurium friedrichsthalii thrives in bright, indirect light. Place it near a window with ample natural light, avoiding direct sun exposure which can scorch its delicate foliage. Insufficient natural light can significantly slow growth. Artificial grow lights can supplement natural light if needed.
Watering
Consistent moisture without waterlogging is important. The plant prefers moist, never saturated, soil. Allow the top inch of soil to dry out before watering again, easily checked with the “finger test.” Ensure good pot drainage to prevent root rot from water accumulation. Adjust watering frequency based on environmental conditions and seasonal changes.
Soil and Potting
Due to its epiphytic nature, Anthurium friedrichsthalii requires a specialized, well-draining, and airy potting mix. Standard potting soil is too dense and retains too much moisture. An aroid mix, composed of materials like orchid bark, perlite, and coco coir, provides necessary aeration and drainage, mimicking its natural environment. A slightly acidic soil pH (5.5-6.5) is preferred.
Temperature and Humidity
Anthurium friedrichsthalii prefers warm, stable temperatures, ideally 70-85°F (21-29°C), tolerating 60-90°F (15-32°C). Avoid sudden fluctuations and cold drafts by placing it away from frequently opened windows or doors. High humidity, above 70%, is crucial for this tropical plant. Increase indoor humidity with pebble trays, regular misting, a room humidifier, or by grouping plants.
Fertilizing
During its active growing season (spring through autumn), Anthurium friedrichsthalii benefits from regular fertilization. Use a balanced liquid fertilizer, or one high in phosphorus, diluted to one-quarter to one-half strength to prevent root burn. Fertilize monthly or every three months, adjusting based on growth. Reduce or stop fertilization during winter dormancy.
Repotting Your Anthurium friedrichsthalii
Repot Anthurium friedrichsthalii when it shows signs of being root-bound (roots emerging from drainage holes) or stunted growth, typically every two years. Choose a pot only slightly larger to prevent excessive moisture retention. Gently remove the plant, minimizing root ball disturbance.
Prepare fresh potting mix. Position the plant in the new pot, filling around the roots and gently patting down the substrate. Water thoroughly after repotting to settle the soil. Reduce watering slightly for a short period to allow adjustment.
Propagating Anthurium friedrichsthalii
Anthurium friedrichsthalii can be propagated by division or stem cuttings. Division is straightforward for large plants with multiple growth points. Carefully separate the root ball into smaller sections, each with roots and foliage, then pot individually. Gently loosen soil and tease apart entangled roots.
For stem cuttings, select a healthy stem with at least one node and aerial roots. Root cuttings in water, sphagnum moss, or a perlite-based medium. When using water, submerge only the stem’s bottom portion to prevent rot. New roots take time to develop before transplanting.
Common Problems and Solutions
Yellowing leaves can indicate overwatering (leading to root rot and mushy leaves) or underwatering (dry, crispy leaves). Adjust watering to allow the top soil to dry between waterings. Nutrient deficiencies can also cause yellowing; apply balanced fertilizer during the growing season.
Brown leaf tips or edges often signal insufficient humidity or over-fertilization. Increase humidity with misting, pebble trays, or a humidifier. If over-fertilization is suspected, flush the soil and adjust fertilizer. Stunted growth may result from inadequate light or nutrient deficiencies; move the plant to brighter, indirect light and ensure consistent fertilization.
Anthurium friedrichsthalii is susceptible to common houseplant pests like spider mites (fine webbing), mealybugs (white, cottony masses), thrips, and aphids. Regular inspection, especially of leaf undersides, aids early detection. Treat infestations by wiping pests, using insecticidal soap, or applying neem oil. Proper humidity also deters some pests like spider mites.