Philodendron rugosum (Philodendron Pig Skin)

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Philodendron, Genus, rugosum, Species,

Genus & species

philodendron pig skin

Araceae

Cloud forests of western Ecuador and Colombia, Andes mountains

Container Friendly

SunPart Shade

WaterMedium

HardinessZones 10–12

Overview

Pig skin philodendron is a tropical climbing aroid native to cloud forests, growing as a hemiepiphyte on host trees. Indoor mature specimens reach 4-6 feet (1.2-1.8 m) tall on a moss pole, with potential to climb 20-30 feet (6-9 m) on trees in native habitat. Leaves are heart-shaped to ovate, 6-10 inches (15-25 cm) long and 4-7 inches (10-18 cm) wide, with thick leathery texture and pronounced rugose surface created by deeply impressed veins. Leaf color is dark green above with paler green underside; new leaves emerge bronze-pink before maturing. Petioles are stout, terete, and 4-6 inches (10-15 cm) long. Stems show internodes of 2-4 inches (5-10 cm) with aerial roots emerging at each node for attachment to host substrates. Mature climbing specimens may produce inflorescences with 4-6 inch (10-15 cm) green spathes from spring through summer in tropical greenhouses; indoor plants rarely flower. Growth rate is slow, producing 4-8 new leaves per year under optimal conditions. All parts contain calcium oxalate crystals causing oral and skin irritation. Population numbers in native habitat are declining due to deforestation; the species is listed as Near Threatened by the IUCN.

Native Range

Native to cloud forests of the western slopes of the Ecuadorian and Colombian Andes at elevations of 1,500-6,500 feet (450-2,000 m), where it grows as a hemiepiphyte climbing tree trunks under high humidity and constant moisture.

Suggested Uses

Grown indoors as a climbing specimen on moss poles 3-6 feet (90-180 cm) tall in 8-12 inch (20-30 cm) pots, or as a tabletop plant when juvenile. Used in atriums, conservatories, and heated greenhouses where humidity exceeds 60 percent and temperatures remain above 60°F (15°C). Cultivated by aroid collectors and indoor plant enthusiasts for the textured foliage; commercial availability remains limited due to slow propagation rates.

How to Identify

Distinguished from other Philodendron species by heart-shaped leaves with thick leathery texture and pronounced wrinkled surface from deeply impressed veins. Leaves measure 6-10 inches (15-25 cm) long with stout terete petioles 4-6 inches (10-15 cm) long. Aerial roots emerge at each stem node, and new leaves emerge bronze-pink before maturing dark green.

Appearance

Size & Dimensions

Height4' - 6'

Width/Spread2' - 3'

Colors

Flower Colors

Foliage Colors

Fall Foliage Colors

Bloom Information

Indoor specimens rarely flower. Mature climbing specimens in tropical greenhouses produce green spathes 4-6 inches (10-15 cm) long enclosing pale spadices from late spring through summer. Flowering requires the plant to reach mature size by climbing 6-10 feet (1.8-3 m) on a supportive structure with constant humidity above 70 percent.

Detailed Descriptions

Flower Description

Green spathe (rare indoors)

Foliage Description

Dark green with bronze-pink new growth

Growing Conditions

Sun Requirements

SunPartial Shade

Tolerates up to 4 hours of direct sunlight daily

• Full Sun: 6+ hours of direct sunlight

• Partial Shade: 3-6 hours of direct sunlight

• Full Shade: Less than 3 hours of direct sunlight

Soil Requirements

pH Range5.5 - 7.0 (Acidic to neutral)

3579

Soil Types

loam peat

Drainagewell drained

Water & Climate

Water Needs

Medium

Frost Tolerance

tender

Care & Maintenance

Care Guide

Water when the top 1-2 inches (2.5-5 cm) of soil dries; reduce watering frequency by 30-50 percent during winter dormancy. Maintain bright indirect light at 1,500-2,500 foot-candles; direct sun scorches the rugose leaf surface within 1-2 hours. Hold temperatures of 65-85°F (18-29°C) and humidity above 60 percent; foliage develops crispy edges below 50 percent humidity. Fertilize monthly with balanced 20-20-20 at half strength from spring through fall. Repot every 2-3 years into chunky aroid mix containing orchid bark, perlite, and coir for maximum drainage. Root rot develops in dense or saturated soil; spider mites colonize the textured leaf surfaces in low humidity.

Pruning

Cut stems back to a node with sharp pruners to control height or encourage branching; new growth emerges from the node below within 6-10 weeks. Remove yellowing or damaged leaves at the petiole base year-round. Train climbing stems onto moss poles or wooden slabs by tying loosely with garden ties; aerial roots attach within 12-16 weeks under humidity above 70 percent.