Find & Download Free Graphic Resources for Limp. However, if left untreated, the leaves go from curling, to being limp, to wilting, and finally dying and dropping off. Some of these are as follows: Pothos purifies the air and filters out formaldehyde, benzene and carbon monoxide. Pothos leaves turning brown due to improper watering. If you over-water, your pothos could get root rot and the leaves might turn yellow (yellow leaves can also mean too much sun). HELP. Find anything about plants, content, and more. Why has your houseplant gotten so saggy? One of the primary causes of yellow leaves on pothos is too much sunshine. Yellow leaves on a pothos can mean too much water (the leaves usually brown a bit towards the center 1st), too dry, too much sun, or too much fertilizer.