Horsehead Philodendron
The Horsehead Philodendron (Philodendron bipinnatifidum) is an evergreen ornamental plant that grows vigorously and can reach up to 8 or 15 feet in length. It has two-lobed glossy, deep-green, heart-shaped leaves that are up to 24 inches in length and 18 inches in width. It features small spadices that are very showy on mature plants with a deep red-brown color. It is a self-heading plant, with a strong stem that grows like a vine in support of the plant’s large leaves and aerial roots. It is suited for use in a hanging basket and will perform very well as an outdoor ornamental plant in USDA Zones 10 and 11. Horsehead philodendron can also make a very attractive indoor houseplant.
These plants prefer evenly moist soils and should be watered regularly year-round to maintain soil moisture. In winter, water when the top few inches of soil are just beginning to dry out. During the summer months, when active growth is taking place, keep the soil consistently moist on a regular basis. Seeing drooping or limp leaves is a sign that the plant is lacking water.
Horsehead Philodendron is a happy plant when it is exposed to medium-low to bright, indirect light. While it can tolerate low-light conditions, the leaves may become slightly lighter in color. If the Philodendron gets too much sun, some of the leaf scorch can occur, and the color of the leaves will turn yellowish. Fluorescent light is best for it and should be positioned a few feet above the plant.
Ideally, Horsehead Philodendron should be grown in temperatures between 65 and 80 degrees Fahrenheit (18 to 27 degrees Celsius). This plant will die at temperatures below 45 degrees Fahrenheit (7 degrees Celsius) and should not be kept in temperatures below 55 degrees Fahrenheit (13 degrees Celsius) for long periods of time.
They prefer high humidity and should be placed near a humidifier or the use of a pebble-water tray is recommended, as well as misting the plant often during spring and summer. Horsehead Philodendrons also respond well to peat-based potting mixes with good drainage.
Horsehead Philodendron prefers well-drained soil that is rich in organic matter. A good potting soil for this plant would be a mixture of peat moss, compost, perlite, and vermiculite. Adding a layer of mulch at the top of the soil can also help hold in the moisture.
Fertilizing is not necessary but may help to promote healthy growth and increase the size of the leaves. Use a liquid fertilizer formulated for houseplants diluted to half strength for every two to four weeks during the summer growing season. In the winter, allow the plant to go without fertilizer and only feed when new growth starts in the spring.
Horsehead Philodendron is a hardy plant. However, it is susceptible to common pests like mealybugs, scale, aphids, spider mites, and whiteflies. If you notice a pest infestation, spraying the plant with a solution of insecticidal soap can help control the problem. If the solution does not work, using an insecticide specifically designed to eliminate the pests should be used. To prevent further infestations, keep the plant in sterile soil, make sure not to overwater, and remove any dead or dying leaves.
Typically, Horsehead Philodendron should be repotted every two to three years, as long as the roots are not root bound. Repotting should be done when the roots become visible through the drainage holes in the bottom of the pot. It is best to repot in the spring or summer, before the plant begins active growth.
Pruning is necessary to let the plant get enough air to breathe. Pruning also limits the plant’s size and helps promote new growth. Removal of brown, yellow, or diseased leaves is also recommended to keep the plant healthy. It is best to prune in the spring or summer and avoid pruning in the fall or winter.
Mulching encourages drainage and conserves moisture in the soil. Use a coarse, organic mulch like pine needles or bark to help reduce the risk of root rot. The mulch should be kept an inch thick from the crown of the plant.
Horsehead Philodendrons can be propagated easily from seed, division, or stem-tip cuttings. To propagate from a seed, it is best to start the seeds in a sterile and slightly damp peat-vermiculite mixture, ideally in late winter. Division is recommended for mature plants in the fall or winter. Lastly, stem-tip cuttings can be used to propagate a Horsehead Philodendron. Cuttings with at least one leaf and a few nodes should be taken in the spring months and planted in the same potting mix as the original plant.
These plants are heavy feeders and require a support to help hold their large leaves upright. Wooden poles, trellises, and stakes are all good options for supporting the Horsehead Philodendron.
Horsehead Philodendrons require a rest period while they are not actively growing. During this rest period, the soil should be kept lightly moist but not overly saturated. The plant’s watering schedule should be reduced, and the plant should be placed in a cool, dark area. Keep the plant in its dormant state until the arrival of spring when the active growing season resumes.
Horsehead Philodendron is toxic to both humans and pets if ingested. The juice from the plant can cause skin irritation and itching. Children and pets should be kept away from the plant to prevent accidental ingestion.
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