Philodendron billietiae
 
Common Names Billietiae Philodendron, Orange-Stemmed Philodendron, Arrow-Leaf Aroid
 
Zones 10–11 (outdoors); Zone 9+ with protection; indoor year-round in colder zones
 
Philodendron billietiae is a rare climbing aroid prized for its elongated, arrow-shaped leaves and vivid orange petioles. Discovered in French Guiana in 1981, this species has become a collector’s favorite for its sculptural foliage and bold coloration. Mature plants develop a graceful, arching habit with aerial roots and fenestrated leaves when grown vertically.
 
Key Features
Growth Habit: Climbing vine; supports via aerial roots
Height: 3–5 ft. indoors; up to 10 ft. with support
Trunk: None; stems woody with age
Leaves: Elongated arrowhead shape; glossy green with ridged midrib; 12–36 in. long
Petiole: Bright orange to orange-red; slender and arching
Inflorescence: Rare indoors; white spathe and spadix
Fruit: Not typically produced in cultivation
Ecology: Native to French Guiana, Brazil, and Guyana; grows in mid-canopy rainforest zones
 
Growing Conditions
Light: Bright indirect light; avoid direct sun to prevent leaf scorch
Watering: Allow top 2 inches of soil to dry; water thoroughly when dry
Soil: Chunky, well-draining aroid mix; ideal blend includes orchid bark, perlite, peat, and charcoal
Temperature: 65–85°F (18–29°C); protect below 55°F (13°C)
Humidity: 60–80% preferred; misting or humidifier recommended indoors
Propagation: Stem cuttings with node; rooting in water or soil
Tolerance: Sensitive to cold and overwatering; moderate pest resistance
 
Landscape Use Best suited for indoor climbing displays, moss poles, trellised walls, or tropical conservatories. Pairs well with Philodendron ‘Florida Ghost’, Monstera dubia, and Anthurium clarinervium for layered aroid compositions.