Pothos Leaves Turning Yellow: Causes and Fixes

Yellow leaves on pothos are the most common care concern for owners of this plant, and they have several distinct causes. Getting the diagnosis right before acting is important: watering a plant that is already overwatered makes the problem worse, and moving a plant to lower light when it is already light-starved accelerates decline. This guide identifies the causes in order of likelihood with clear diagnostic steps for each.

Step One: Check the Potting Mix

Before anything else, push a finger or wooden skewer into the potting mix to about halfway down the pot and assess the moisture level.

If the mix is bone dry and the plant is drooping alongside the yellowing, underwatering is likely. Water thoroughly and monitor. Recovery should begin within hours for the healthy leaves; the yellow leaves will not reverse.

If the mix is wet or soggy and has been for several days, overwatering is the primary suspect. This is the more serious situation and requires a different response than simply watering less.

Overwatering

Overwatering is the most common cause of yellow leaves in pothos. When soil stays consistently wet, the roots are deprived of oxygen and begin to break down. Once root damage is established, the plant cannot absorb water or nutrients efficiently even if conditions improve, and leaves yellow as the plant loses function in damaged tissue sections.

The fix is to improve drainage and reduce watering frequency. Allow the mix to dry more significantly between waterings: the top three to four centimeters should feel dry before adding water. If the mix has been wet for an extended period, consider unpotting the plant and inspecting the roots. White and firm roots are healthy; brown, soft, or slimy roots indicate rot. Remove any rotted material, let the roots dry briefly in open air, and repot into fresh well-draining mix. The full root rot treatment is in the how to treat and prevent root rot guide.

Low Light

Prolonged low-light conditions cause gradual, diffuse yellowing in pothos, typically affecting multiple leaves spread across the plant rather than being concentrated at the base. The plant reduces the chlorophyll in its leaves when it cannot photosynthesize efficiently, which manifests as a general loss of color and vibrancy alongside the yellowing. Variegated varieties lose their patterning as the plant attempts to maximize chlorophyll in all available leaf area.

Move the plant to a brighter position. An east or west-facing window, or within two meters of a south-facing window, provides sufficient light for healthy growth. Yellow leaves already present will not recover, but new growth will emerge in healthier color once conditions improve.

Natural Aging

A single yellow leaf at the base of the plant on an otherwise healthy, actively growing pothos is most likely natural aging. Pothos sheds its oldest, lowest leaves as it produces new growth at the stem tips. This is normal and requires no intervention. Remove the yellowed leaf cleanly at the petiole junction and continue regular care.

If one or two lower leaves yellow every few weeks while the plant produces healthy new growth at the tips, this is the normal cycle of an actively growing plant.

Nutrient Deficiency

A pothos in the same potting mix for more than a year without fertilizing may develop yellowing from nutrient depletion. Nitrogen deficiency causes yellowing that starts in the older leaves and progresses toward the newer growth over time as the plant cannibilizes nutrients from mature tissue. Resume monthly feeding with a balanced liquid fertilizer at half strength during the growing season. Flush the mix with plain water before fertilizing again if the plant has not been fed for a long time, to clear any accumulated salts. For the full yellowing context across houseplant species, the houseplant leaves turning yellow guide covers the broader diagnostic framework.