Split Leaf Philodendron

Scientific Name: Thaumatophyllum bipinnatifidum (formerly Philodendron bipinnatifidum)

Common Names: Lacy Tree Philodendron, Split-Leaf Philodendron, Horsehead Philodendron

Native to: Tropical and subtropical regions of South America, including Brazil, Bolivia, Argentina, and Paraguay

Lighting Requirements: Bright, indirect light to partial shade. It can tolerate some direct morning sun but should be protected from harsh afternoon sunlight, which can scorch its leaves.

Height: 6 to 10 feet indoors; up to 15 feet outdoors in ideal conditions (typically 3 to 5 feet in Central Texas if it survives the winters)

Width: 6 to 8 feet indoors; can spread wider outdoors (typically 3 to 5 feet in Central Texas if it survives the winters)

Winter Look: Indoors, it remains lush year-round. In cooler zones, it will not survive frost and must be overwintered indoors.

Seasonal Interest: Year-round, with ornamental appeal from its large, deeply lobed, glossy green leaves

Drought Tolerance: Moderate. Prefers consistently moist soil but can tolerate short periods of drought. Overwatering should be avoided.

Soil Requirements: Well-draining, rich, organic soil with good aeration

pH Range: 5.5 to 7.5 (slightly acidic to neutral)

Hardiness Zones: USDA Zones 9b to 11. In cooler zones, it is grown as a houseplant or brought indoors during winter.

Deer Resistance: Low. It is not particularly deer-resistant and may be browsed if grown outdoors.

Attracts: Not a significant attractant for wildlife; primarily grown for its ornamental value

Toxicity: Toxic to pets and humans. Contains calcium oxalate crystals, which can cause irritation or swelling if ingested.

Potential Issues: Overwatering can lead to root rot. Susceptible to freeze damage.

Notes: Thaumatophyllum bipinnatifidum is a striking tropical plant prized for its large, deeply lobed leaves and its ability to add a lush, architectural element to any space. While often grown as a houseplant, it can thrive outdoors in tropical and subtropical climates. It prefers warm, humid conditions and benefits from occasional misting indoors. This plant is relatively low-maintenance but requires ample space to accommodate its mature size. When grown indoors, a sturdy container and occasional pruning help manage its growth. Outdoors, it can serve as a dramatic focal point in gardens or landscapes.