Philodendron atabapoense

Natural range and habitat of Philodendron atabapoense

Philodendron atabapoense grows naturally in Amazonas in southern Venezuela and in Guainía, eastern Colombia. It is a lowland tropical forest climber; in Colombia it grows at around 100–140 m, using surrounding trees and vegetation to climb in warm, rainy conditions.

Making room for Philodendron atabapoense

• Give the stem a firm support: A tall pole or board suits the long climbing growth. Tie the stem loosely where needed and leave the leaf stalks free to move.
• Leave space around the leaves: Keep the plant far enough from walls and glass that the long leaves can turn toward the light without being pressed or creased.
• Place it in strong, filtered light: A bright spot helps keep the vine compact. Ease a newly moved plant into higher light so the leaves are not scorched.
• Temperature and humidity: Maintain roughly 18–29 °C and move the plant warmer before temperatures remain below 15 °C. Keep ambient moisture at roughly 50–60%, before rewatering. Pair this with light air movement around the leaves.
• Water when the upper mix has partly dried: Soak the whole pot, allow the excess to drain and wait until the pot feels lighter before watering again.
• Choose an airy aroid mix: A bark-rich, chunky mix drains well while still holding some moisture between waterings.
• Feeding: During active stem extension, use complete fertiliser at a measured rate; then pause or reduce feeding when growth loses momentum.
• Repotting: Move the plant into a modestly larger pot when roots densely fill the current container. Keep the climbing support stable independently of pot size.
• Propagation: Use a firm, healthy node-bearing cutting; pieces with an existing aerial root often establish readily.

What changes on Philodendron atabapoense can mean

• A long leaf has a straight split or dry crease: Look for a wall, support or neighbouring leaf rubbing against it. Give new growth more room; old scars will not disappear.
• New leaves show silvery streaks with tiny black specks: Check folded growth and leaf undersides for thrips. If you find them, isolate the plant, remove visible pests and treat with a product suitable for thrips on houseplants.
• Wine-red marks appear on a firm leaf stalk or young vein: This can be normal colouring for the species. Look at the plant's firmness and overall growth before treating colour alone as damage.
• The vine wilts while the potting mix is still wet: Pause watering and make sure excess water can escape. If the vine remains limp, examine the roots, trim away any soft or rotten sections and replace broken-down mix if needed.

Philodendron atabapoense is toxic to people and pets

• Keep this plant away from children, cats and dogs.
• Its leaves and stems contain insoluble calcium oxalate crystals, which can irritate the mouth, throat, skin and eyes.
• Chewing may cause burning pain, drooling, swelling, vomiting or difficulty swallowing. Contact a veterinarian or medical professional after exposure, especially if swelling or breathing problems occur.

Philodendron atabapoense: where the name comes from

Philodendron combines Greek philein, meaning “to love,” with dendron, meaning “tree.” The epithet atabapoense refers to the Atabapo region and river in the upper Orinoco basin.

Heinrich Wilhelm Schott established the genus Philodendron in 1829 in Wiener Zeitschrift für Kunst, Literatur, Theater und Mode, volume 3, page 780.

George Sydney Bunting first described Philodendron atabapoense in 1975 in Acta Botanica Venezuelica, volume 10, page 291.