When is the best time to spray an apple tree against bugs and disease?
Black rot is a fungus appearing on the apples when they are ready to harvest. It occurs where the apples have had physical damage. The disease starts out as small brown spots on the apple, which then get bigger as the apple grows. The spots turn brown and then turn black. Black rot will also attack the bark and twigs and may survive over the winter. If you catch black rot early, the fruit is treated with sulfur spray. Make sure to prune any infected wood. Destroy it and then use a fungicide to prevent further damage to the apple tree.
