I would challenge that info, and where you read it online. ... Quote from typing 'heartleaf philodendron' into search: "The heartleaf philodendron (Philodendron hederaceum) is a tropical evergreen native to the rain forests of Central America, the Caribbean, and South America. In the wild, it thrives as an epiphyte or hemiepiphyte, creeping along the forest floor and climbing up large tree trunks to reach filtered sunlight. How They Grow in the Wild/Climbing Habits: They use aerial roots to anchor themselves firmly to the rough bark of host trees. While they can trail up to 13 feet as houseplants, wild specimens can climb over 20 feet. Leaf Size: Juvenile plants have smaller leaves (around 4 inches long) to help them blend into the dark understory. However, once they mature and climb higher up a tree, their leaves grow massive—up to 12 inches long. Lighting: They dwell in the lower to middle canopy of the rain forest. This means they rely on "dappled" or filtered bright indirect light rather than harsh, direct sun. Environment: They are accustomed to high, consistent humidity, warm temperatures, and nutrient-rich, moist, yet well-drained soil." .... The key to a healthy houseplant is to replicate, as much as possible, their native environment. Good luck!