The photo on the right shows what powdery mildew looks like on the leaf of a plant. It can look similar like a silvery residue. There are many different species of the fungal disease; powdery mildew. Like most diseases each species effects a different type of plant. Unlike, most fungal disease powdery mildew does not require moisture to infect your plant. This disease survives in warmth, meaning it can infect plants under a wide variety of circumstances.
Identifying powdery mildew.
Plants infected with this disease will first appear to have tiny cooking flour spread onto the leafs, stems and sometimes fruit. These spots start out as small as a pencil lead and can take over a whole leaf/plant. Mildew usually only effects the tops of leaves, and will target younger leaves first, turning them yellow and causing them to fall off. As the mildew continues to effect the plant, entire leaf will be completely covered in mildew.
Cause of Mildew
Powered Mildew is everywhere, because it is a fungi it has spores. These spores spread through the wind, insects and splashing water. Most commonly mildew is prone to grow in areas of high humidity, crowed planting, and areas with poor air circulation. A very common cause of powdery mildew is top watering. This is when you water with a hose or watering can hitting the leaves of the plant. Plants, should be watered at he base.
Treatment Of Mildew
- Remove and destroy ALL effected plant parts.
- Thin out your plants, by pruning to improve air circulation.
- DO NOT fertilize till powered mildew has been combatted, as the spores will target new growth.
- DO NOT top water plants.
- Apply a fungicide. Make sure the fungicide is appropriate for powered mildew and the particular plant you are using it on.
- If you don’t want to use a fungicide, 1 teaspoon of baking soda in 1 quart of water will do the trick.