Apricots small and hard and never ripened

Question

We have 5 apricot trees. Last year was the first year to flower and the fruit was really small and it stayed hard until it fell off the tree, never ripened.

Answer 1

Fruit trees usually need a certain number of years to develop sufficient roots to support a healthy crop. This may well be the main reason your young trees dropped their fruit. This article tells you more about fruit drop: https://www.gardeningknowhow.com/edible/fruits/apricots/apricot-fruit-falling-off.htm
Meanwhile, this article will help you to keep your trees as healthy as they can be: https://www.gardeningknowhow.com/edible/fruits/apricots/apricot-tree-growing.htm