The Philodendron ‘Imperial Red’ is a distinctive hybrid philodendron. New leaves emerge in deep red, almost black, hues, eventually maturing to a glossy dark green while often retaining reddish or purplish undersides. This upright, non-vining plant forms a compact, bushy shape, making it popular for enhancing indoor spaces. Its striking appearance and relatively straightforward care contribute to its appeal.
Imperial Red Philodendron Care
Light Needs
Philodendron ‘Imperial Red’ thrives in bright, indirect light. Placing it several feet from an east-facing window, where it receives weaker morning sun, or a south/west-facing window, provides enough light. Direct sunlight should be avoided as it can scorch leaves and stunt growth, leading to brown patches or fading color. Insufficient light can lead to leggy growth and dull, stunted leaf coloration.
Watering Requirements
Water when the top one to two inches of soil feel dry to the touch. Consistent moisture is favored, but overwatering can lead to root rot. Ensure the pot has drainage holes to prevent waterlogging. Signs of underwatering include wilting or crispy leaves, while persistently wet soil can cause yellowing leaves due to root rot.
Soil Preferences
This philodendron variety grows best in a light, well-draining potting mix that also retains some moisture. A suitable blend includes organic matter, such as peat moss or coco coir, which helps hold water. Add perlite or pine bark for drainage and aeration, preventing waterlogging. The plant prefers mildly acidic soil, with a pH level between 6.0 and 6.5.
Temperature and Humidity
Philodendron ‘Imperial Red’ prefers warm, humid conditions, ideally between 65°F (18°C) and 80°F (27°C). Prolonged exposure to temperatures below 55°F (13°C) can cause damage. While it can adapt to average household humidity, higher humidity, around 50% to 70%, is beneficial. To increase humidity in drier environments, place the plant on a pebble tray filled with water, group it with other plants, or use a humidifier.
Fertilizing
During spring and summer, fertilize regularly. Apply a balanced liquid houseplant fertilizer, diluted to half strength, every four to six weeks. Reduce or stop fertilizing in fall and winter when the plant is dormant. Over-fertilization can lead to salt buildup in the soil and potentially burn the roots.
Troubleshooting Common Problems
Yellowing leaves often indicate overwatering, especially if accompanied by soft, mushy stems. However, yellowing can also stem from nutrient deficiencies or natural aging. Brown leaf tips or edges commonly point to low humidity, underwatering, or mineral buildup from tap water or excessive fertilizer. Increasing ambient humidity or adjusting watering practices can often alleviate these symptoms.
Pests such as spider mites, mealybugs, and aphids feed on sap, weakening or discoloring leaves. Regular inspection of the leaves, especially the undersides, for early detection. Treating infestations can involve wiping leaves with a damp cloth, using insecticidal soap, or applying neem oil. Leggy growth or small leaves signal insufficient light, causing the plant to stretch. Move the plant to a brighter location with indirect light for more compact, robust growth.
Propagating Imperial Red Philodendron
Propagating Philodendron ‘Imperial Red’ is best done using stem cuttings. Propagate during active growth, typically spring or early summer. To take a cutting, select a healthy stem with at least one or two nodes (where leaves and roots emerge). Using clean, sharp scissors or a knife, make a cut just below a node.
Cuttings can be rooted in water or moist soil. If rooting in water, place the cutting in a glass or jar, submerge the node while keeping leaves above the waterline to prevent rot. Change the water every few days. Roots typically appear within two to four weeks. For rooting in soil, plant the cutting in a well-draining potting mix, burying at least one node. Keep the soil consistently moist, and place the pot in a warm spot with bright, indirect light until new growth appears.
Understanding Plant Toxicity
Like other philodendrons, ‘Imperial Red’ contains calcium oxalate crystals. These crystals make the plant toxic if ingested by pets or humans. Ingestion can cause irritation and swelling of the mouth and throat, leading to symptoms like difficulty swallowing, excessive drooling, or vomiting. Keep this plant out of reach of children and pets to prevent accidental ingestion.