Leaf Spot and Powdery Mildew on Begonias

What would be causing my King Begonias leaves to get dead dried up spots on the leaves that soon grow to devour the whole leaf

Hi Marty,

It sounds like your Begonia Plant has either Bacterial Leaf Spot DiseaseWhen 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 on plants. 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. or powdery mildewPowdery mildew is a plant disease that puts a grayish white powder on plant leaves and stems. View a picture of this plant disease and learn how to treat it..

Bacterial Leaf Spot and Blight:  When a plant gets Leaf Spot DiseaseWhen 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 on plants. 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., 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.

Yellow halos from Leaf Spot on Begonia Leaves

Bacterial Leaf Spot

  powdery mildewPowdery mildew is a plant disease that puts a grayish white powder on plant leaves and stems. View a picture of this plant disease and learn how to treat it.: There are several types of fungus that cause powdery mildewPowdery mildew is a plant disease that puts a grayish white powder on plant leaves and stems. View a picture of this plant disease and learn how to treat it.. The mildew appears on the surface of leaves and other parts of a plant as a powdery grayish-white substance. Grape Ivy, Begonias, and African Violets are prone to this disease. powdery mildewPowdery mildew is a plant disease that puts a grayish white powder on plant leaves and stems. View a picture of this plant disease and learn how to treat it. causes the tissue in the leaves under the fungus to die. This results in leaf-drop and a general decline in the growth of the plant.

With all fungal and bacterial diseases, better air circulation, well-drained soil, dry leaves, and less water help control Leaf Spot DiseaseWhen 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 on plants. 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. and powdery mildewPowdery mildew is a plant disease that puts a grayish white powder on plant leaves and stems. View a picture of this plant disease and learn how to treat it..  Never mist a plant with either of these plant problems. You can use a commercial Fungicide 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.