Anthurium polystichum is a unique aroid prized for its distinctive, velvety, deeply veined leaves that often develop multiple finger-like segments as they mature. Native to the wet tropical forests of Bolivia, Colombia, and Ecuador, it thrives in the understory. Its appealing leaf structure and vining growth habit make it a desirable addition for plant enthusiasts.
Caring for Anthurium Polystichum
Light
Anthurium polystichum thrives in bright, indirect light, mimicking its natural habitat beneath a dense canopy. Direct sunlight can cause leaf scorching, while insufficient light results in stunted growth. An east or north-facing window typically provides suitable light.
If a south or west-facing window is the only option, position the plant a few feet away or use a sheer curtain to diffuse intense light. Artificial grow lights can supplement natural light, especially in winter, ensuring 6-10 hours of daily illumination.
Watering
Consistent moisture is important for Anthurium polystichum, but avoid waterlogging to prevent root rot. Allow the top inch or two (2-3 cm) of soil to dry out before watering. Water thoroughly until water drains from the pot bottom, then discard any excess from the saucer after 30 minutes.
Watering frequency varies with environmental factors like temperature, humidity, and soil mix. Regularly checking soil moisture with a finger is a reliable method to determine when to water.
Soil
The ideal soil mix for Anthurium polystichum should be chunky, airy, and well-draining, reflecting its epiphytic nature. A premium aroid mix with components like orchid bark, perlite, coco coir, and a small amount of potting mix or sphagnum moss is recommended for drainage and moisture retention.
Good aeration is important for healthy root development, preventing compaction. A slightly acidic pH (5.5-6.5) is preferred for optimal nutrient uptake.
Temperature and Humidity
Anthurium polystichum prefers warm, consistent temperatures (18°C-27°C / 65°F-80°F). It is sensitive to cold drafts and sudden fluctuations, so maintaining stable temperatures supports its tropical growth.
High humidity (above 60%) is also important. To increase humidity, use a humidifier, place the plant on a pebble tray, or group it with other plants. High humidity helps prevent brown leaf tips and supports foliage health.
Fertilizing
Anthurium polystichum benefits from regular fertilization during its active growing season (spring and summer). A balanced liquid fertilizer, diluted to one-quarter strength, is suitable. Some growers use fertilizers with higher phosphorus for robust growth.
Over-fertilizing can lead to nutrient burn, damaging roots and foliage. Reduce or cease fertilization during cooler, dormant months. Apply fertilizer to moist soil to prevent root damage and aid absorption.
Propagating Anthurium Polystichum
Propagating Anthurium polystichum is achieved through stem cuttings or division, effective methods for expanding a collection. The best time is during the plant’s active growing season (spring or early summer) to allow new plants ample time to establish.
Stem Cuttings
Stem cuttings are a straightforward approach for vining anthuriums. Select a healthy stem section with at least two nodes, make a clean cut below a node, and optionally dip the end in rooting hormone. Cuttings can be rooted in water, sphagnum moss, or a well-draining medium like perlite.
When rooting in water, ensure only the stem is submerged, with leaves above the waterline, and change the water every few days.
For rooting in a solid medium, plant the cutting with at least one node buried, keeping the substrate consistently moist.
Division
Division is effective when the plant has developed multiple offshoots or outgrown its container. Carefully remove the plant, gently separate the root ball into sections ensuring healthy roots and foliage, then replant into fresh potting mix.
Common Issues with Anthurium Polystichum
Anthurium polystichum can exhibit distress signs, often linked to environmental conditions or pests. Yellowing leaves indicate overwatering or nutrient deficiency; soggy soil may lead to root rot, causing leaves to yellow and wilt. Brown leaf tips or edges often point to low humidity or inconsistent watering. Increasing humidity or adjusting watering can resolve these issues.
Pest infestations, including spider mites, mealybugs, aphids, and scale insects, can also affect Anthurium polystichum. These pests feed on plant sap, leading to yellowing, stunted growth, or visible signs like webbing or cottony masses. Regular foliage inspection helps early detection. Treatment often involves wiping pests with rubbing alcohol or applying insecticidal soap. Slow growth, if not dormancy-related, might indicate insufficient light or nutrient lack, prompting a review of placement and fertilization.