What are the black/ brown spots on my Philodendron Plants?

What is causing the holes and blackish brown spots on my Philodendron

Hi Martha,

Black, brown, and yellow leaf marks due yo leaf spor disease
Pothos Plant with Leaf Spot Disease

It looks like your plant has a pretty bad case of leaf spot disease. When a plant gets Leaf Spot disease, the attacking fungus or bacteria leaves small brown spots trimmed in yellow where it is feeding on the leaves. These spots may vary in shape, color, and size.  As with all other fungal and bacterial diseases, better air circulation, well-drained soil, dry leaves, and less water help control Leaf Spot disease. Never mist a plant if Leaf Spot disease is suspected. You can use a commercial Fungicide to treat Leaf Spot disease or the homemade remedy of putting a tablespoon or two of baking soda and a teaspoon or two of mineral oil in a spray bottle of water. Shake the solution well and then spray all areas of the plant that are infected. Keep infected plants away from your other houseplants until you know you’ve gotten rid of the problem.