Q.Apple Tree
My apple tree is about 5 years old. for the last couple of years the tree produces many apples but when they get to be about the size of a quarter they gradually fall off until there none left at all. Can you tell me what causes that?

Certified GKH Gardening Expert
Sometimes apples do this ,naturally, to reduce a fruit set that is too heavy. It can also be due to a lack of water, or light to the inner part of the tree.
Here is an article that will help you further: https://www.gardeningknowhow.com/edible/fruits/apples/apple-trees-dropping-fruit.htm