The Philodendron ‘Red Heart’ is a distinct and sought-after houseplant, celebrated for its striking red coloration and unique heart-shaped leaves. Its appeal extends from its vibrant new growth to the mature form, which develops even richer hues and a more substantial presence. Understanding the specific characteristics and care requirements for a mature ‘Red Heart’ Philodendron is valuable for enthusiasts aiming to cultivate a thriving specimen. This plant’s ability to transform as it grows makes specialized care important for encouraging its full mature potential.
What a Mature Philodendron Red Heart Looks Like
As a Philodendron ‘Red Heart’ matures, it undergoes a notable transformation in its physical appearance. Younger plants typically feature smaller, bright red, heart-shaped leaves. Over time, these leaves intensify in color, deepening to a rich, dark red or bronze, sometimes with red veins or centers, while newer leaves may still emerge a vibrant red.
The leaves also significantly increase in size, growing from a few inches to potentially 10 inches long or even larger than a dinner plate in ideal conditions. This plant exhibits a climbing or vining growth habit, sending out long stems that seek support. Along these stems, aerial roots develop, which in their natural habitat would anchor the plant to trees for support as it climbs.
The overall structure of a mature ‘Red Heart’ Philodendron becomes more robust and expansive. It can grow up to 3-6 feet in length indoors, forming a lush, full display. Providing a support structure encourages the plant to climb, which can lead to larger foliage and a healthier growth habit, allowing the plant to truly showcase its mature form.
Care for Your Mature Philodendron Red Heart
Caring for a mature Philodendron ‘Red Heart’ involves providing consistent conditions to support its robust growth. The plant thrives in bright, indirect light; placing it near an east or west-facing window is often ideal, as direct afternoon sun can scorch its leaves. Adequate light also helps maintain the intensity of its red coloration.
Watering should occur when the top 1-2 inches of soil feel dry to the touch, ensuring the plant is thoroughly watered until excess drains from the pot. It is important to avoid overwatering, as this can lead to root rot, and to reduce watering frequency in winter when growth slows. While the plant tolerates average household humidity, higher humidity levels, between 40-70%, can encourage faster and larger leaf growth, especially benefiting aerial roots.
A well-draining potting mix is essential for a mature ‘Red Heart’ Philodendron, preventing waterlogged conditions that can harm roots. A good mix often includes organic matter like coco coir, compost, and perlite or orchid bark to improve drainage and aeration. During the active growing season from spring to summer, fertilize monthly or every 2-4 weeks with a balanced liquid fertilizer, diluted to half strength, to support vigorous growth.
Providing a climbing structure, such as a moss pole or trellis, is beneficial for a mature ‘Red Heart’ Philodendron. This mimics its natural climbing habit and can promote significantly larger leaves. Pruning can be done to maintain shape, remove any yellowing or dead leaves, and encourage bushier growth by cutting just above a leaf node, ideally in spring or fall. Repotting a large, mature plant should be done every two to three years, or when it doubles in size, into a pot only one size larger to prevent overwatering issues.
Addressing Common Issues in Mature Plants
A common concern with Philodendron ‘Red Heart’ is the loss of its vibrant red coloration, which often indicates insufficient light. If the plant is not receiving enough bright, indirect light, its leaves may appear greener rather than their characteristic deep red. Moving the plant to a brighter location, away from direct scorching sun, can help restore its color intensity.
Leggy growth, characterized by long stems with sparse leaves, can occur if the plant lacks adequate light or support. Providing a moss pole or trellis encourages denser foliage and a more compact appearance. Regular pruning of leggy stems, cutting just above a leaf node, will also promote bushier growth.
Yellowing leaves can signal either overwatering or underwatering, or sometimes a nutrient deficiency. Checking the soil moisture before watering is important; the soil should dry out between waterings. Brown tips or edges on leaves often point to low humidity or inconsistent watering. Increasing ambient humidity around the plant can alleviate this issue.
Common houseplant pests such as spider mites, mealybugs, aphids, and thrips can affect Philodendron ‘Red Heart’. Regularly inspecting the plant’s leaves, especially the undersides, helps in early detection. Treating infestations with insecticidal soap or neem oil is an effective approach, and isolating affected plants can prevent spread.