The Anthurium clarinervium, also known as the “King of Clarinervium” or “Velvet Cardboard Anthurium,” is a highly sought-after houseplant. Its striking deep green, heart-shaped leaves feature a velvety texture and prominent, contrasting white veins, making it a captivating addition to any indoor plant collection.
Understanding the King of Clarinervium
Native to Chiapas, Mexico, Anthurium clarinervium is a species of the Araceae family. It thrives on limestone ledges in shaded, elevated forests, often as a lithophyte, absorbing nutrients from water and debris on rocks. Its thick roots find support in thin soil wedged between stones.
The “King” moniker refers to its distinct foliage. Its large, thick, heart-shaped leaves, up to 6-12 inches, display ivory or light green veins that create a corrugated, cardboard-like pattern against the dark green, velvety surface. Though it produces inconspicuous flowers, the plant is cultivated primarily for its unique leaf texture and venation.
Essential Care for King of Clarinervium
Light Needs
Anthurium clarinervium thrives in bright, indirect light, similar to the dappled sunlight it would receive under a forest canopy. Place the plant near an east-facing window or a few feet from a south or west-facing window with sheer curtains.
Direct sunlight scorches leaves, causing them to yellow or wilt. Insufficient light leads to stunted growth, dull veining, or leggy stems with smaller leaves.
Watering Practices
Proper watering is crucial for this plant, which prefers its soil to be consistently moist but not waterlogged. Water thoroughly when the top 1-2 inches of the soil feel dry to the touch.
Overwatering causes root rot, while underwatering leads to wilting and crispy leaves. Ensure excess water drains completely, avoiding standing water. Use lukewarm water to prevent root shock.
Humidity and Temperature
High humidity is crucial, with levels of at least 60-80% recommended. Increase humidity using a humidifier, grouping plants, or a pebble tray.
The ideal temperature is 65-80°F (18-27°C), tolerating slightly cooler winter temperatures above 60°F (15°C). Avoid cold drafts and extreme fluctuations.
Soil and Potting
Anthurium clarinervium requires an airy, well-draining mix that retains some moisture. Components often include orchid bark, perlite, and coco coir or peat moss. Standard potting soil is too dense and can cause waterlogging.
When repotting, choose a pot with good drainage holes, only slightly larger (about 2 inches wider) than the previous one. Repot every 1-3 years or when root-bound.
Fertilization
During the active growing season (spring and summer), fertilize lightly. Apply a balanced liquid fertilizer, diluted to half or quarter strength, every 2-4 weeks or monthly.
Avoid over-fertilization, which can cause salt buildup and root burn. Reduce or stop fertilization during fall and winter when growth slows.
Propagating King of Clarinervium
Propagate Anthurium clarinervium in spring or early summer using division or stem cuttings. For division, remove the plant from its pot and gently separate the root ball, ensuring each new section has roots and leaves. Pot these divisions in well-draining mix.
For stem cuttings, identify a strong side shoot with a mature leaf and aerial roots. Make a clean cut where it joins the main stem. Place the cutting in moist sphagnum moss, perlite, or water until roots develop, then transfer to a small pot with suitable mix.
Common Issues and Solutions
Anthurium clarinervium may face common issues. Yellowing leaves often indicate overwatering or too much direct sunlight; check soil moisture and move to filtered light. Brown, crispy edges suggest low humidity or underwatering; increase humidity or ensure consistent watering. Stunted growth or dull veining can mean insufficient light or nutrients; move to brighter, indirect light and fertilize during the growing season.
Common pests include:
Spider mites
Mealybugs
Thrips
Aphids
Whiteflies
Scale
Regularly inspect leaves, especially undersides, for early detection. Manage minor infestations by rinsing the plant; persistent issues may require insecticidal soap or neem oil.