Why are my philodendron leaves turning yellow and dying?
The leaves on my indoor philodendron are turning yellow. Why?
Yellowing leaves may be a watering issue; either too much or too little.
Check the soil moisture; the top inch or so should dry out between waterings.
You also may need to feed your plant a bit. In spring and summer you can fertilize with a balanced all purpose fertilizer once a month.
The article below will help you review the care needed.