Put the plant in lower humidity, indirect light, and allow for good airflow. If there are black spots on the yellow leaves then this indicates mold.Repot and check for root rot if cutting back on water does not fix the issue.Allow soil to dry in the top few inches between watering.Cut back on watering and watch for too high of humidity (over 60%).TL DR for a Scindapsus Treubii Moonlight With Yellow Leaves They can often go lower than 40% and be ok, but going above the 60% mark can cause issues and one indication is yellowing leaves. Optimal humidity for these plants is between 40% and 60%. Yellowing leaves can also be an indication that there is too much humidity for the plant. The key to helping the plant with mold is to prevent the mold from spreading and not to have the plant in conditions that are favorable for mold growth. Do not water the plant again until the soil has dried out mostly. Water from the bottom by sitting the pot in a tray of water for a few hours to allow the plant to take up what it needs. 'There is a closely related species, Scindapsus pictus, which is a lot more common and similar,' explains Hancock, 'In that, it's also variegated in silver, so I can see how there could be some confusion between the two. Remove the leaves that have the mold and change how you water your Scindapsus. The Sterling Silver Scindapsus, aka treubii' Moonlight', has completely silver leaves with a dash of green. To try and combat this it is best to put your Scindapsus Treubii in a location that has good airflow (but not in a direct draft) and has indirect light. Let the top few inches of soil dry out before you water the plant again. Pay attention to the soil moisture levels after this as you determine how often your Scindapsus needs to be watered. Put your plant back in the pot with the new soil. It thrives in indirect sunlight, it does well in low light as well. A peat-based soil is fine, but add some extra perlite or vermiculite to the mixture to help the soil drain well. Scindapsus Treubii Moonlight is also an easy to grow plant. Get new soil to put your plant in, you don’t have to be too particular with the soil. If your pot does not have any drainage then you will want to get a new pot to put your plant in that allows for the excess water to drain from the pot. Also, go ahead and remove the leaves that have completely turned yellow at this time.
If you see roots that are darker than the others and have a mushy feel to them remove them with some sharp shears or scissors. Inspect the roots to see if any root rot has occurred. In order to combat this, you need to remove the plant from its pot and get as much of the soil off of the roots as you can. Helping a Scindapsus Treubii with Root Rot However if more yellow leaves start to appear then this could be an indication that root rot has begun and you will have to do some more to help save the plant. If root rot has not set in you should not see any more leaves turning yellow on your plant.