Philodendron Plowmanii is a beautiful, rare plant that is best known for its big, heart-shaped green leaves with dark green veining. This plant loves bright, indirect light and grows toward the sun, so turning this plant is a must! PLANT CARE Light & Humidity Philodendron White Princess are slow growers. To create an optimum environment for them to grow, you will need to provide high humidity and bright, indirect light. Due to its stunning variegation this Philodendron requires an abundance of indirect light to maintain it. If you notice browning on the white parts of the leaves it needs more light to photosynthesis. Lower amount of lights will likely cause the variegation to fade and could result in the plant dying. Soil Although the White Princess Philodendron plant is rare, its ideal potting mix ingredients are pretty common, and will thrive in almost all the soil mixes a typical Philodendron would. However, the soil must be well-draining while also retaining some moisture. If you want a healthy White Princess Philodendron plant, avoid using heavy soils like peat earth as this causes suffocation of the roots.