Philodendron acutifolium – Rare Climbing Aroid with Glossy Ribbed Foliage


Philodendron acutifolium K.Krause is an unusual scandent (climbing) aroid admired for its striking, ribbed foliage. The elongate, oblanceolate blades are glossy, slightly leathery, and can reach impressive sizes. Prominent primary lateral veins stand out strongly on the underside, while a wide midrib—sunken above and raised below—gives the leaf structure and definition. Secondary and tertiary veins run parallel to the primaries, adding to the elegant ribbed appearance that makes this species so distinctive.
 
● Defining Traits of Philodendron acutifolium


Leaf blades: Large, elongate-oblanceolate, glossy, and coriaceous
Venation: Prominent midrib and strongly raised lateral veins below
Growth form: Scandent climber that attaches to trees and support structures
Texture: Slightly leathery leaves with parallel secondary and tertiary veins
 
● Natural Background


This species is native to tropical regions of South America, where it grows as a climbing understory aroid. Its natural habit of attaching to trees allows the leaves to develop their full size and form. In cultivation, it benefits from a sturdy support such as a moss pole or tree fern slab, encouraging the plant to express its climbing nature and produce larger foliage.
 
● Care Tips for Philodendron acutifolium


Light: Bright, indirect light encourages larger leaves; avoid harsh direct sun
Watering: Keep substrate evenly moist but not waterlogged; allow the top layer to dry slightly between waterings
Humidity: Prefers 60 – 80% for best growth
Temperature: Ideal between 18 – 28 °C; avoid cold drafts
Soil: Airy, well-draining aroid mix rich in organic matter
Feeding: Apply diluted balanced fertiliser every 4 – 6 weeks during active growth
 
● Growth Behaviour and Display Notes


As a climbing Philodendron, acutifolium will produce increasingly larger leaves when allowed to ascend. Its bold venation and ribbed texture make it a collector’s plant, well suited to vertical displays in bright interiors, conservatories, or greenhouses. Given space and humidity, it can become a striking focal specimen.
 
● Common Issues and Solutions


Yellowing leaves: Often caused by overwatering or poor drainage
Stunted growth: Lack of support; provide a pole or surface to climb
Brown edges: Usually a sign of low humidity or irregular watering
 
● Questions About Philodendron acutifolium


Does it need a climbing support? Yes, climbing encourages larger leaves and natural growth.
How large can the leaves get? In the right conditions, blades can grow to substantial lengths, displaying bold ribbed venation.
Is it pet safe? No, like all Philodendrons it contains calcium oxalates and should be kept away from pets and children.
 
● Etymology of Philodendron


The genus name Philodendron (established by Schott, 1830) comes from Greek: philo- (“loving”) and dendron (“tree”), meaning “tree-lover,” referring to the plant’s natural habit of climbing trees.
 
● Why Add Philodendron acutifolium to Your Collection?


With its glossy, ribbed foliage and scandent growth, Philodendron acutifolium is a rare species perfect for collectors of unusual aroids. Order today and let its bold venation and climbing habit bring character to your plant display.