P. erubescensis a shade-loving philodendron. They dislike bright sunlight and should not be exposed to full sun outdoors. Indoors, an east-facing window with morning light would be a good solution. Don't let the suns rays touch the foliage; if several leaves turn yellow, it might be getting too much sunlight.
The plant does best in a loamy, nutrient-rich, quick-draining soil. If the soil mix is too heavy, add a little sand.
Water the plant when the surface soil is dry. They're drought-tolerant but don't do well when overwatered, which can cause the plant to rot. If there is too much water, the leaves will begin to turn yellow.