image of philodendron Philodendron atabapoense

image of philodendron Philodendron atabapoenseKey Highlights Philodendron atabapoense The Philodendron atabapoense is highly sought after as a houseplant due to its fast growing, climbing nature and adaptability to indoor conditions. While it thrives in humidity, this plant is surprisingly resilient and can tolerate short dry periods if necessary. Its long, narrow leaves feature deep green tops and striking maroon purple undersides, giving it an exotic appearance. It is a hemi epiphytic plant

The Philodendron atabapoense is a striking rare climbing philodendron that has gained popularity among plant collectors due to its elongated, lance-shaped leaves with deep green tops and contrasting maroon undersides. Unlike more common philodendrons, it has a sleek, refined appearance that makes it stand out in any indoor or outdoor plant collection. 

Philodendron atabapoense grows great indoors while maintaining an impressive size, making it a favorite among houseplant enthusiasts. When given proper support, such as a moss pole or trellis, it will produce longer, more dramatic leaves, enhancing its visual impact. In the wild, it grows as an epiphyte, climbing trees and reaching for sunlight while absorbing moisture and nutrients from the humid air. 

Native to the tropical rainforests of Venezuela and Brazil, this plant has long, narrow arrow-shaped leaves with a deep green upper surface and a burgundy to maroon underside with an illustrious shine and sheen.

This color contrast gives it an exotic appearance that is highly appealing to plant collectors.

The plant is also known for its fast-growing nature, especially when provided with adequate support, humidity, and indirect light.

When grown indoors, this Philodendron typically grows up to 6 feet tall and 3 feet wide, depending on its support structure.

In its natural habitat, it can climb much higher, reaching over 10 feet. The leaves can grow significantly longer when provided with optimal conditions, adding to their appeal as a large, dramatic houseplant. 

The flowers of Philodendron atabapoense are small and greenish-white in color. Its blooms consist of a spathe and spadix, which are typical of the Araceae family. The spathe is usually green or maroon on the outside and pale inside, enclosing the spadix that contains tiny flowers. However, it rarely flowers indoors, as it requires specific environmental triggers, including high humidity and warm temperatures. 

One unique aspect of Philodendron atabapoense is its epiphytic and hemi-epiphytic nature, meaning it can grow both in soil and attached to trees. This versatility allows it to adapt well to different growing conditions. It also has a high tolerance for humidity fluctuations, making it easier to care for than some other tropical plants. Its leaves have a leathery texture, helping reduce moisture loss and allowing it to thrive in various indoor environments. 

When and How to Water Your Philodendron atabapoense 

Like other drought-tolerant plants, the Philodendron atabapoense is an excellent choice for plant enthusiasts who prefer low-maintenance greenery. This species can withstand occasional dry spells, thanks to its ability to store moisture in its roots. However, while it is resilient, it thrives best when provided with consistent moisture, allowing the soil to dry out slightly between waterings. Overwatering can lead to root rot, so a well-draining potting mix is essential to prevent standing water.

In the spring and summer, during the active growing seasons, it requires more frequent watering to support its vigorous growth. Water the plant thoroughly when the top 1-2 inches of soil becomes dry, ensuring even hydration. The frequency of watering largely depends on environmental factors such as humidity, light exposure, and pot size. If grown outdoors, the plant may require more frequent watering during hot, dry periods. 

In fall and winter, during the dormant season, your Philodendron enters a slower growth phase and requires less water. Watering should be reduced to prevent excessive moisture build-up in the soil. Ensure the soil is dry at least halfway before the next watering. Maintaining proper humidity levels indoors can help prevent dehydration, but misting is generally unnecessary unless the air is extremely dry. 

Light Requirements – Where to Place Your Philodendron 

When grown indoors as a houseplant, this plant thrives in bright, indirect light. It should be placed near a window with filtered sunlight, such as a north or east-facing window, where it can receive 6 to 8 hours of indirect light daily.

Too much direct sunlight can scorch its leaves, while insufficient light may lead to leggy growth and slower development.

Grow lights can supplement natural light if necessary, ensuring consistent growth throughout the year.

For outdoor cultivation, this Philodendron prefers dappled sunlight or partial shade, similar to its natural rainforest habitat.

It can tolerate morning sun but should be protected from harsh afternoon rays to prevent leaf damage.

If grown under a tree canopy or shaded patio, it will flourish with at least 5 to 6 hours of bright, indirect light daily. In tropical climates, it can be grown outdoors year-round with proper light exposure. 

Optimal Soil & Fertilizer Needs 

The Philodendron atabapoense favors very airy, sandy soil that drains well. Avoid using dense, compacted soils that trap excess water, leading to root rot. Instead, make or buy a well-draining potting mix, or ideally use our specialized potting mix that contains 5 natural substrates and mycorrhizae to promote the development of a strong root system that helps your Philodendron to thrive.

For optimal growth, fertilize Philodendron atabapoense once a year in their actively growing season which is typically spring using a ratio of about 5-10-5 (NPK). Organic options like fish emulsion or worm castings can also boost soil nutrition. Stop feeding in the dormant months when the plant’s growth slows. 

Hardiness Zones & More 

When grown indoors as a houseplant, it prefers temperatures between 65°F and 80°F and humidity levels above 50%. Keeping it in a warm, humid environment mimics its natural tropical habitat, promoting lush growth. Avoid placing it near cold drafts, air conditioners, or heating vents, as extreme temperature fluctuations can stress the plant.

In the United States, this is mostly an indoor plant, but if you live in southern Florida or Hawaii then you can cultivate it outdoors in USDA zones 9-11.

It prefers high humidity and bright, indirect light similar to its rainforest origin.

If growing outdoors in cooler climates, it should be brought inside when temperatures drop below 50°F to prevent cold damage. 

If you are concerned about humidity or notice browning edges on your plant leaves. This addition will dramatically improve the health of your philodendrons. 

Wildlife – Philodendron Flowers Attract the Following Friendly Pollinators  

The Philodendron atabapoense flowers are known to attract a variety of pollinators such as bees, butterflies, hummingbirds, and beetles in their natural habitat. While the plant is primarily grown for its stunning foliage, when it does flower, these pollinators help with its reproductive cycle.

According to the ASPCA, Philodendron atabapoense is mildly toxic to humans, and pets such as cats and dogs. The plant contains calcium oxalate crystals, which can cause oral irritation, excessive drooling, and gastrointestinal discomfort if ingested in a large amount. It is safe to touch and handle, making it a popular choice for indoor houseplants.  

How to Propagate Philodendron atabapoense 

The Philodendron atabapoense can be easily propagated through stem cuttings. Select a healthy stem with at least one node and a few leaves, then cut just below the node using sterilized shears. The cutting can be rooted in water or moist sphagnum moss before transferring it to soil. Keep the propagation medium consistently moist and place it in bright, indirect light to encourage root development.