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We’ll start with an easy problem to diagnose. If the room that houses your pothos is very cold and the leaves on the pothos have turned black, it probably has frostbite.
These tips indicate that the air lacks humidity. But this problem often results from temperature changes, specifically those brought on by heating and air conditioning systems.
Curling pothos leaves often indicate temperatures too high for your plant. The long edges of the leaves will curl toward each other. The leaves will look wilted and droopy.