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The Philodendron Gloriosum, a captivating member of the Araceae family (also known as Aroids), is a rare gem. With its distinctive large, heart-shaped velvety leaves adorned with prominent white-green veins, this plant is truly stunning!
Known for its easy-going nature, the Philodendron Gloriosum thrives in conditions reminiscent of its native tropical rainforests. It delights in 70-90% humidity, abundant yet filtered bright light, and occasional light fertilization. Ensuring a well-draining potting mix is essential for maintaining optimal root health. When the topsoil dries out, fear not to provide a deep watering for this magnificent Aroid.
It’s advisable to steer clear of succulent potting mixes, as they tend to dry out too rapidly.
Now, let’s delve into the specifics!
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Origins and Native Habitat of Philodendron Gloriosum
The precise origins of the Philodendron Gloriosum are subject to varying accounts. Initially identified in the early 1800s within the tropical rainforests of Colombia, these plants have since been observed growing in the wild in other regions of Central America and certain parts of Brazil.
The name “Gloriosum” is derived from its origins, signifying the “glory of the rainforest.” Alternately known as Anthurium Gloriosum and Velvet Philodendron, the latter designation highlights its luxuriously velvety leaves.
Where to Acquire a Philodendron Gloriosum?
Despite its inclusion on the IUCN Red List of Threatened Species, Philodendron Gloriosum remains readily accessible on platforms such as Etsy. However, obtaining a mature, well-established plant may come at a price, with an average cost of around US$100, while smaller specimens are available for US$30-40.
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Caring for Your Philodendron Gloriosum
Light Requirements
Position your Philodendron Gloriosum in a location that receives abundant bright, filtered light, avoiding direct sunlight. As a low-growing creeper typically found near the forest floor, it is less adapted to harsh light conditions. Optimal locations include East-facing windows, and ensure even growth by rotating the plant weekly.
During the winter, consider supplementing natural light with a grow light, maintaining a range of 800-1,500 foot candles for 5 hours daily.
Excessive sunlight can lead to leaf yellowing, while insufficient light may result in small, leggy foliage. Regular observation allows for adjustments to meet the plant’s light requirements.
Water Requirements
Proper watering is a critical aspect of Philodendron Gloriosum care, and it often involves navigating a fine line. While these plants have moderate watering needs, overwatering leading to root rot is a common issue.
Tips for Watering
- Always use your finger to gauge the moisture level of the top 2 inches of the soil. Water the plant only when this topsoil is dry, avoiding a fixed schedule. This method allows for natural adjustments based on climate, evaporation rates, and the plant’s changing water requirements, such as reduced watering during winter dormancy.
- Water until excess water drains through the pot’s drainage hole.
- Ensure your pot has drainage holes to prevent water from pooling at the bottom, keeping the roots excessively wet. Regularly empty any excess water from the saucer.
Signs of Over and Underwatering
- Overwatering: Soft, droopy leaves and stems.
- Underwatering: Limp leaves that may appear “crispy.” Check soil moisture to distinguish between overwatering and underwatering.
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Humidity Requirements
While Philodendron Gloriosums are generally easy-going, they are particular about humidity. Thriving in 70-90% humidity, a minimum of 60% is recommended.
- Humidifier: If possible, invest in a humidifier for the most effective and convenient way to increase air moisture around your plant.
- Pebble Tray Method:
- Find a shallow dish and add pebbles, ensuring they are not completely submerged.
- Place your potted plant directly on top of the pebble-filled tray.
- The evaporating water from the tray enhances humidity around the plant.
Maintaining the ideal humidity level contributes to the well-being of your “glory of the rainforest.”
Temperature Requirements
As tropical plants, Philodendrons, including the Gloriosum, thrive in warmer climates. Nevertheless, they exhibit a notable tolerance for temperatures exceeding 60 degrees F (15 degrees C) during winter. Ideally, maintain a stable temperature range between 70-90 degrees F (21 – 32 degrees C) throughout the year for optimal growth.
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Seasonal Dormancy
In regions with distinct seasons, your Philodendron Gloriosum may enter a dormant phase during colder winter months. During this period, typically from late fall to spring, anticipate a slowdown in growth, and don’t expect the emergence of new foliage. Understanding and respecting this seasonal dormancy is crucial for proper care.
Soil Requirements
Your Philodendron Gloriosum thrives in a loose and well-draining potting mix, ideally slightly acidic with a pH range of 5-8. Avoid succulent mixes as they tend to dry out too rapidly. Here’s an ideal soil mix for your Gloriosum:
- Two parts potting mix
- One part pumice or perlite
- One part orchid bark
- A handful of charcoal
The perlite and orchid bark contribute to soil looseness and drainage, allowing excess water to run off and promoting optimal root aeration. The potting mix provides essential nutrients, while charcoal, reminiscent of the plant’s natural forested habitat, aids in absorbing impurities and stabilizing soil pH. Additionally, charcoal acts as a natural pest deterrent.
When planting your Gloriosum, opt for porous terracotta or clay pots, providing proper breathability. Choose a pot that is wider rather than deep, keeping in mind that your plant is a creeper, not a climber.
Fertilizer
For optimal growth, use a gentle, urea-free, and nutritionally complete fertilizer. During the spring and summer months, fertilize with each watering, using a mixture of 1/2 teaspoon fertilizer with a gallon of water. Skip fertilizing in the fall and winter.
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Plant Structure and Growth
Unlike many other Philodendrons, the Gloriosum is a terrestrial (creeping) plant with a woody stolon that grows horizontally along the ground. Upright stems can reach several feet in height, lifting the large heart-shaped leaves above the forest undergrowth. As a houseplant, expect a height of up to 6 feet and leaves reaching 8 inches wide. In the wild, leaves may grow up to 36 inches.
Flowering
Mature Philodendron Gloriosums flower in their native habitat but typically after more than 15 years.
Repotting
Repot every one or two years in spring. Before repotting, water your plant the day before. Gently remove the plant, tease out the roots, and trim any brown or decaying parts. Fill a new pot with fresh potting mix, ensuring the stolon rests above the surface. Tuck the roots under the surface, tap down the soil, and water the plant the next day.
Toxicity
Unfortunately, Philodendron Gloriosum is toxic when ingested, containing insoluble oxalate crystals. Ingestion can lead to severe mouth irritation, burns, vomiting, nausea, and gastrointestinal discomfort in both humans and pets. More severe symptoms typically occur with the ingestion of large quantities. If an accident occurs, wash the affected area with cool water and seek medical attention if necessary.
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Pruning
Regular pruning is beneficial to maintain the vitality of your Philodendron Gloriosum and promote new growth. Use clean garden shears to remove dead or yellow foliage, as well as any overly long or tangled stems. Major pruning, removing large portions of stems, is best done in late spring, but you can trim lackluster leaves throughout the year.
Propagation
Propagation through seeds is challenging due to the plant’s lengthy flowering time (over 15 years). The most effective method is through stem or stolon cuttings. Follow these steps:
- Identify a mature stolon with a few nodes and minimal leaves.
- Use sharp, clean garden shears to cut the stolon between two nodes.
- Place the stolon on top of potting mix in a plastic container with a lid, ensuring high humidity.
- After 4-6 weeks, new growth should emerge. Alternatively, you can propagate in water, transferring the cutting to potting mix once roots establish.
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Support
Your Philodendron Gloriosum may benefit from a bamboo or wooden stake to support its top-heavy leaves. While it won’t climb or train on these supports, prop up the stake and loosely bind any floppy stems using garden ties.
Pests
Although Gloriosums are generally resistant to infestations, common houseplant pests like spider mites, mealybugs, and aphids may still occur. Use an Insecticidal Soap spray to effectively address these pests. Consider using a reputable brand for best results in eradicating common pests.
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