YELLOW LEAVES: The most common cause of yellowing leaves among Pothos plants is improper soil moisture–in particular, overwatering. Only water your Pothos when the top 25% of the soil in the pot is dry. Soil should remain damp, but not wet or soggy. In the winter, you can allow your plant to dry out a little more between waterings, but be sure to boost the humidity around your plant with regular misting, a humidifier, or pebble tray.
DROOPING LEAVES: If you accidentally let your plant’s soil dry out completely, you may see leaves go limp, droop, and possibly start to brown. If the soil is extremely dry all the way through the pot, a thorough soak is in order.