Philodendron atabapoense – Narrow-Leaved Climber with Burgundy Undersides
Philodendron atabapoense is a striking climbing aroid native to the lowland rainforests of southern Venezuela and northwestern Brazil, especially around the Atabapo River. Known for its long, papery leaves with deep green tops and rich burgundy undersides, this species brings bold contrast and a distinctly tropical aesthetic to indoor collections. Mature leaves can reach 65 cm in length, often developing a subtle bluish cast under bright light due to a natural waxy coating. Juvenile foliage emerges with reddish-violet tones, adding extra visual interest as the plant matures.


What Makes Philodendron atabapoense Unique


 
Petioles: Slightly convex, pale green with burgundy spotting; underside is rough-textured and pinkish
 
Leaves: Triangular-ovate, thin-textured, with deep green upper surface and vivid burgundy undersides
 
Inflorescence: Rare in cultivation; features green and purple-spotted stalks and a cherry-red spadix
 
Growth pattern: Vigorous climber with aerial roots for support and moisture absorption
 
Foliage change: Juvenile leaves display reddish hues before transitioning to mature form


Natural Habitat of Philodendron atabapoense


This species grows in warm, humid lowland forest regions at altitudes of 100–140 m. It thrives in filtered light beneath dense canopy, in conditions with high humidity, consistent warmth, and rich organic soils. Indoors, it maintains a moderate growth rate and climbs readily with support, reaching over 2 m when trained on a moss pole or trellis.


How to Care for Philodendron atabapoense


 
Light: Prefers bright, indirect light; avoid direct sunlight to prevent leaf damage
 
Water: Water when the top 2–3 cm of substrate feels dry; keep evenly moist but not soggy
 
Substrate: Use a loose, fast-draining mix with bark, coconut coir, perlite, and moss
 
Fertilizer: Feed monthly with a balanced, water-soluble fertilizer
 
Humidity: Prefers 60–80%; tolerates lower levels but may develop crisping edges
 
Temperature: Ideal range is 20–28 °C; avoid prolonged exposure below 18 °C
 
Repotting: Repot when roots fill the container or plant outgrows support; not tied to seasons


Propagation and Maintenance Tips


 
Propagation: Cuttings with one or more nodes root well in moist, airy substrates
 
Pruning: Remove old or yellowing leaves to encourage fresh growth
 
Support: Use a moss pole or trellis to guide vertical growth and leaf elongation


Common Growing Problems and How to Fix Them


 
Pests: Monitor for spider mites and mealybugs; treat early with neem oil or insecticidal soap
 
Root rot: Caused by poor drainage or overwatering — adjust watering and soil mix
 
Yellow leaves: Typically from inconsistent moisture — check substrate and routine
 
Leaf drop: Often triggered by cold air or sudden temperature swings
 
Fungal spots: Improve airflow and avoid misting late in the day


Toxicity Information


Like most Philodendrons, this species contains calcium oxalate crystals and is considered toxic if ingested. Keep away from pets and young children. Wearing gloves during pruning can help prevent skin irritation for sensitive individuals.


Etymology and Botanical Origin


The name Philodendron comes from Greek: “philo” (to love) and “dendron” (tree), referencing the genus’s climbing behavior. The species name “atabapoense” refers to the Atabapo River in Venezuela. It was formally described by botanist G.S. Bunting in 1975 in *Acta Bot. Venez.* 10: 291.


Helpful Questions About Philodendron atabapoense


 
How do I know when to water?Check if the top 2–3 cm of soil is dry before watering again.
 
Does it like warm temperatures?Yes — it thrives between 20–28 °C with no drafts or cold dips.
 
Is it safe for pets?No — it is toxic if ingested, like most aroids.
 
Can I grow it in a hanging pot?It prefers climbing — a moss pole will give you stronger growth and longer leaves.


Order Philodendron atabapoense – Add a True Rainforest Classic to Your Collection


This rare South American climber is prized for its stunning color contrast and elegant leaf shape. Buy Philodendron atabapoense now and elevate your indoor jungle with a unique species that rewards good care with spectacular foliage.