Nutrient Deficiency

• Fertilize your pothos if it develops brown leaf tips of margins as this can be a symptom of a potassium or potash deficiency. Feed once a month with a liquid houseplant fertilizer diluted by 50 percent. Reduce to once every other month during the winter.
  
  

Salt Accumulation

• Flush out the soil with abundant water as soon as you see any white deposit on the surface of the soil. These are caused by a buildup of salts from water and fertilizers and can cause brown leaf tips unless they are washed out of the soil regularly.
  
  

Dry Air

• Mist your pothos every day and keep its pot on a dish of damp gravel to increase humidity levels. Provide your vine with a mos pole to climb and keep the pole moist. Keep it out of the dry airflow produced by heaters and do not put your pothos above a radiator.
  
  

Underwatering

• Check your pothos' soil if it develops brown leaf tips. Water if the soil is dry and subsequently water as soon as the surface of the soil is dry to the touch. Make sure you provide enough water to thoroughly soak the soil.
  
  

Overwatering

• Allow the soil to dry out if it is waterlogged and remove any dish from under the pot. Only water when the surface of the soil has dried out completely. Never leave your pothos standing in water and make sure that the drainage hole at the bottom of its container is clear.