Monstera Plant Leaves Black Spots. Ask a Question forum. Three things you can do to mitigate future black spots and improve the overall health of your Monstera.
Black Spots on Monstera due to Improper Fertilization Nutrient deficiencies can cause spots on Monstera leaves. Unfortunately you might miss out on a few factors and realize that your plant is already turning brown and growing small leaves. As a soil-borne fungus its present at all times even deep winter.
You may also notice yellowing leaves or leaves not forming holes due to insufficient nutrients.
Ask a Question forum. My Monstera Deliciosa has developed these black spots over the last 2-3 weeks. The biggest thing that can wreck your monsteras leaves is over or underwatering. I think you will.
