My dear apple tree is producing apples with black spots, when you open the apple is like dry inside, I think is a fungus, my brother told me to cut the tree there is not treatment for it, he know I am 100% organic. Please I don't want to kill my tree, any suggestions? any organic treatment out there?
It could be apple scab, which is a very common fungus disease of apple trees. Cleaning up dead leaves and other litter under the trees is helpful for limiting scab next year. Fungus sprays are the usual control; two somewhat effective fungicides are fixed copper and wettable sulfur. I think that that both of these sprays are acceptable for organic gardeners.
