The Black Cardinal Philodendron (Philodendron erubescens ‘Black Cardinal’) is a striking hybrid plant known for its dramatic foliage. Its leaves emerge coppery or burgundy-red, deepening to a rich, glossy dark green, and eventually an almost black or deep purple-brown. This tropical plant is a popular choice for indoor enthusiasts due to its aesthetic appeal and low maintenance. Unlike some vining philodendrons, the ‘Black Cardinal’ has an upright, bushy growth habit, making it suitable for various indoor spaces.
Black Cardinal Philodendron Care
Light
The Black Cardinal Philodendron thrives in bright, indirect light. East or north-facing windows provide suitable, softer morning light. Near south or west-facing windows, set the plant back or shield it with a sheer curtain to diffuse intense afternoon sun. Direct sunlight can scorch the glossy leaves, leading to damage and dull coloration. Consistent light promotes healthy foliage and vibrant leaf color changes.
Watering
Proper watering is important. The plant prefers its soil to dry out somewhat between waterings to prevent root rot. Check moisture by inserting a finger two to three inches into the soil; if dry, water. Water thoroughly until water drains from the bottom of the pot, ensuring good drainage. While these philodendrons can tolerate slightly lower moisture than some other species, allowing the soil to become completely dry can stress the plant.
Soil Requirements
The Black Cardinal Philodendron requires a well-draining, aerated potting mix that also retains some moisture. A suitable blend includes nutrient-rich potting soil amended with perlite, orchid bark, or coco coir. These amendments improve drainage and aeration, preventing the soil from becoming compacted and waterlogged. Commercial aroid mixes are suitable, or create your own by combining equal parts of these materials. An ideal soil pH for this philodendron ranges from 5.5 to 6.5, indicating an acidic to mildly acidic preference.
Temperature and Humidity
As a tropical plant, the Black Cardinal Philodendron thrives in warm, stable temperatures, ideally between 65°F and 80°F (18°C to 27°C). Sensitive to cold drafts and extreme temperature fluctuations, avoid placing it near air conditioning vents or heating units. High humidity is beneficial, with ideal levels around 60% or higher, though the plant tolerates average household humidity (40-50%). To increase humidity, consider using a pebble tray, grouping plants, or employing a humidifier.
Fertilizing
During its active growing season in spring and summer, the Black Cardinal Philodendron benefits from regular fertilization. Apply a balanced liquid fertilizer, diluted to half its recommended strength, every four to six weeks. Reduce fertilization in fall and winter, as growth slows. Always ensure the soil is moist before applying fertilizer to prevent root burn.
Common Challenges and Solutions
Yellowing leaves on a Black Cardinal Philodendron can signal overwatering, where the soil remains too wet, or sometimes a nutrient deficiency. If leaves yellow, check soil moisture and adjust your watering schedule, allowing the top layer to dry adequately.
Brown leaf tips or edges indicate low humidity or inconsistent watering practices. Increasing humidity around the plant and maintaining a consistent watering routine can help resolve this issue.
Pests like spider mites, mealybugs, and aphids can affect the plant. Inspecting leaves regularly for signs of these pests allows for early intervention. For minor infestations, wiping leaves with a damp cloth or applying insecticidal soap or neem oil can effectively manage them.
Leggy growth, characterized by elongated stems and sparse foliage, points to insufficient light. Moving the plant to a location with brighter, indirect light will encourage more compact and robust growth.