Heart Leaf Philodendron work best as a hanging plant, plant stand or shelf plant. They can be trained to climb a moss pole with higher humidity. Grown in its native environment, Heart leaf Philodendrons can grow to be dozens of feet long and grow parasitically on the trunk of trees and fallen old growth. Grown indoors though, you should expect you Philodendron vines to reach up to 10' long in ideal conditions with leafs that can grow to 9" long.
Philodendrons are a parasitic epiphyte similar to Pothos and Hoya. Meaning they prefer to grow air roots and wrap themselves around dead fall, Trees, branches and rock walls in humid environments. Understanding their native environment is important when learning how to care for these indoors. They are considered an easy plant to grow, great for beginners and are very rewarding with fast, vigorous new growth. Heart leaf Philodendrons like having higher humidity, and around 3 hours of direct sunlight in a day. If your space does not allow that, consider using a small grow light in a lamp. Hardly any room will be too bright for a split leaf, but they can not handle more than 6 hours of direct sunlight in a day. Spraying the plant with a mist bottle or keeping it near a humidifier is a great way to encourage large healthy leaves and a healthy air root system. Using Leaf Shine to keep your leaves dust free and water spot free will improve the presence of the plant in the room.
Using Schultz all purpose Houseplant food systemically every watering - every other watering is a great way to encourage rapid growth in the short Canadian grow season. Many growers use an additional epiphyte fertilizer to encourage large leaves.