These can grow up to 10 ft tall and 10 ft wide! An excellent tropical house plant! 

Light: Split leaf philodendrons thrive in bright, indirect light. They can tolerate some morning sun or filtered sunlight but avoid direct sunlight, especially intense afternoon sun, as it can scorch their leaves. Place them near a north or east-facing window for optimal light conditions indoors.
 
Temperature: These plants prefer temperatures between 65-85°F (18-29°C). They can tolerate slightly cooler temperatures, but avoid placing them in drafts or near cold windows during winter.
 
Watering: Water your split leaf philodendron thoroughly when the top inch or two (2.5-5 cm) of soil feels dry to the touch. Allow excess water to drain away completely, as they are susceptible to root rot if sitting in waterlogged soil. In winter, reduce watering frequency but ensure the soil doesn't completely dry out.
 
Humidity: Split leaf philodendrons appreciate high humidity levels. You can increase humidity by misting the leaves regularly, placing a humidity tray filled with water and pebbles beneath the plant, or using a room humidifier. This is particularly important in dry indoor environments.
 
Soil: Use a well-draining, aerated potting mix that retains some moisture but allows excess water to drain freely. A mix formulated for houseplants or tropical plants works well. You can also add perlite or orchid bark to improve drainage.
 
Fertilizing: During the growing season (spring and summer), feed your split leaf philodendron with a balanced liquid fertilizer diluted to half-strength every 4-6 weeks. Reduce or stop fertilizing during fall and winter when growth slows down.
 
Support: As the plant grows, it may benefit from a support structure such as a moss pole or trellis. This helps the aerial roots attach and climb, mimicking their natural growth habit in the wild.Pruning: Trim yellow or brown leaves as needed to maintain the plant's appearance and overall health. You can also prune to control its size or encourage bushier growth. Use clean, sharp scissors or pruning shears for this purpose.
 
Repotting: Split leaf philodendrons grow well when slightly root-bound. Repot every 2-3 years in spring if the plant has outgrown its pot or if you notice roots emerging from the drainage holes. Choose a pot that is only slightly larger than the current one to prevent overwatering.
 
Pest Control: Keep an eye out for common houseplant pests such as spider mites, aphids, and mealybugs. If pests are detected, treat them promptly with insecticidal soap or neem oil, following the manufacturer's instructions.
 
Winter Care: Bring inside for the winter before teamps get lower than 50 degrees.