What Causes Brown Spots on Calathea Plant Leaves

Hi

I have a calathea and I’m not sure what’s wrong with it. I’ve already tried less light, pebble tray, misting every twice a day. I don’t find any sign of pests

The leaves start with some brown spots and then starts to get yellow

Hi,

You plant has what is called Leaf Spot DiseaseHow to identify and treat Leaf Spot plant disease. See a picture of Leaf Spot disease and learn how to prevent leaf spot disease from attacking your plants.. Sadly, your daily misting has made it worse.

When a plant gets Leaf Spot DiseaseHow to identify and treat Leaf Spot plant disease. See a picture of Leaf Spot disease and learn how to prevent leaf spot disease from attacking your plants., the attacking fungus or bacteria leaves 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 DiseaseHow to identify and treat Leaf Spot plant disease. See a picture of Leaf Spot disease and learn how to prevent leaf spot disease from attacking your plants. on plants. Never mist a plant if Leaf Spot is suspected. You can use a commercial FungicideLearn what fungicides are and how they are used to treat fungal and bacterial plant infections. to treat the problem 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 your infected plant away from your other houseplants so the disease does not spread.