Anthurium waterburyanum is a highly desirable and rare aroid, known for its distinct appearance and striking foliage. It makes a captivating addition to indoor plant collections and offers a rewarding challenge for plant enthusiasts.
Unique Characteristics and Origin
Anthurium waterburyanum is native to the tropical rainforests of Ecuador, thriving as a hemiepiphyte. It often starts growing on other plants, then sends roots to the ground. The plant is recognized for its substantial, ovate, heart-shaped leaves, which can achieve considerable size and a deep green, velvety texture. It was named in honor of Bette Waterbury, a co-founder and the first president of the International Aroid Society.
Essential Care Requirements
Bright, indirect light is necessary, mimicking its natural habitat beneath a forest canopy. Place the plant near a window with filtered light, like through a sheer curtain, to prevent leaf scorch. Supplemental grow lights can meet its lighting needs if natural light is insufficient.
Maintain consistent soil moisture, ensuring the soil remains evenly moist but never saturated. Allow the top one to two inches (approximately 25%) of the soil to dry before watering. Thoroughly drench the potting mix until water drains from the bottom, discarding any excess. Watering frequency varies with pot size, mix density, and temperature, requiring less during cooler, dormant periods.
A well-draining, airy soil mix is necessary, reflecting its hemiepiphytic growth. Suitable substrates include pine bark, perlite, coco coir or peat, and orchid bark. Some mixes also incorporate sphagnum moss, horticultural charcoal, or worm castings to enhance drainage, aeration, and nutrient availability. The ideal soil pH is slightly acidic, typically 5.5 to 6.5.
Maintain consistent temperatures within a tropical range, ideally 65°F to 80°F (18°C to 27°C). Avoid significant temperature fluctuations and cold drafts to prevent plant shock. This plant is not frost-resistant and requires protection from colder climates.
High humidity levels are important, replicating its native rainforest environment. Humidity between 60% and 80% is recommended. Use a humidifier, pebble tray, or group plants to achieve these levels. Misting can benefit new leaves but does not significantly increase ambient humidity and may contribute to fungal issues if airflow is poor.
Ongoing Maintenance and Common Issues
Repot when the plant shows signs of being root-bound, such as roots circling the pot or emerging from drainage holes. Select a container one or two sizes larger to prevent overwatering. Use fresh, well-draining soil for renewed nutrients and aeration.
Fertilize during active growing seasons (spring and summer) to support robust growth. This plant is a light feeder; over-fertilization can cause harm. Apply a balanced, water-soluble fertilizer diluted to half-strength every one to four weeks. Reduce or cease fertilization during fall and winter. Ensure the plant is well-watered before applying fertilizer to protect roots.
Trim damaged or yellowing leaves to redirect the plant’s energy. Regularly inspect for pests. Common pests include:
Aphids
Mealybugs
Scale insects
Spider mites
Thrips
Signs of infestation include yellowing leaves, stunted growth, sticky residue, webbing, or small bumps. For pest control, use neem oil, insecticidal soap, or rubbing alcohol on a cotton swab. Root rot, often from overwatering or poor drainage, causes mushy roots and yellowing leaves. Treat by removing the plant, trimming affected roots, and repotting in fresh, well-draining soil. Fungal and bacterial infections can occur, exacerbated by prolonged leaf wetness or poor air circulation. Ensure good airflow and avoid overwatering; remove infected leaves.
Propagating Anthurium Waterburyanum
Propagating Anthurium waterburyanum is possible through stem cuttings and root division. The best time for propagation is during the active growth phase, typically spring and summer, for better rooting success.
Stem Cuttings
For stem cuttings, select a healthy stem with several nodes. Sterilize cutting tools and make a clean cut below a node, ensuring a few leaves remain. Allow the cut end to callus before planting. Place the cutting in a rooting medium like perlite, orchid mix, or water, ensuring at least one node is submerged or buried. Provide bright, indirect light and maintain appropriate humidity.
Root Division
Root division suits mature, overcrowded plants. Water the plant thoroughly to loosen the soil. Carefully remove it from its pot and gently separate the root mass into smaller sections, each with its own healthy root system and top growth. Replant divisions into fresh, well-draining potting mix and water thoroughly. Place newly divided plants in bright, indirect light for recovery.