Philodendron tenue

Natural range and habitat of Philodendron tenue

Philodendron tenue ranges from Central America into Venezuela and Ecuador. Across that broad range it occurs in wet and moist forest as well as some seasonally drier woodland.

Care for Philodendron tenue

• Climbing support: Guide the stem up a stable pole or plank and leave enough space for the large leaves to open without rubbing against walls or neighbouring plants.
• Light: Choose a bright, diffuse position away from prolonged hot sun. Good light across the full climbing stem supports stronger, larger growth.
• Humidity: Moderately humid air suits it, particularly while the large leaves are opening. Keep the plant away from constant hot, dry airflow.
• Watering: Check the mix with a finger or skewer and water once the upper layer is dry to the touch. Soak the pot evenly, then allow it to drain before putting it back.
• Potting mix: Use a loose aroid mix with good drainage and enough moisture retention for the large foliage.
• Temperature: Keep the plant around 18–29 °C with protection from sustained chilling under 15 °C.
• Feeding: During active vine growth, apply complete houseplant fertiliser at moderate strength. As active growth tapers off, reduce the fertiliser rate.
• Propagation method: A firm stem section with an active node can be rooted; select a piece with an aerial root where available.
• Repotting: Wait until roots occupy the available space, then give it a small increase in pot size. Keep the pole or plank secure and the pot stable beneath the large foliage.

Wilting, new leaves and root problems

• The leaves wilt: Check whether the substrate is dry or still wet. Water a dry root ball thoroughly; if the pot is wet and the plant still droops, check the roots before watering again. Our watering guide explains how to judge root-ball moisture before watering again.
• A fresh leaf catches or splits as it unfurls: Do not pull it open. Check whether the pot dried hard while the leaf was expanding, whether hot dry air is hitting the tender blade, whether it is snagging on nearby growth or its support, and whether pests are present. Restore even moisture and give the next leaf more clearance; if you confirm a pest, isolate the plant and use a treatment labelled for that pest.
• Leaves yellow while the pot stays wet: Check the roots for a sour smell or mushy, collapsing tissue; dark colour alone does not prove decay. If rot is confirmed, cut only the rotten parts back to firm growth with disinfected scissors, discard them and repot the healthy remainder in fresh, airy mix.

Philodendron tenue 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.

How the name Philodendron tenue came about

Philodendron combines Greek philein, meaning “to love,” with dendron, meaning “tree.” The epithet tenue means thin, slender or delicate.

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

Karl Heinrich Emil Koch and Augustin first described Philodendron tenue in 1855 in Index Seminum of the Berlin Botanic Garden, volume 1854, issue appendix, page 7.