Q.This Year My 15 Ft Tall Ginkgo Tree Has Leaves That Are Numerous But Tiny. Only About 2% Of Leaves Are Big In Size.
Why would that be and is there anything wrong with the tree and can it be salvaged.

Certified GKH Gardening Expert
It is hard to say from the photo, but the first step will be to test the soil for nutritional deficiencies and pH swings. Once test results are optimal, then you can begin diagnosing issues that are not related to deficiencies.
Here are some articles that will help:
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/soil-ph-plants.htm
https://www.gardeningknowhow.com/ornamental/trees/ginkgo/feeding-ginkgo-trees.htm
https://www.gardeningknowhow.com/ornamental/trees/ginkgo/ginkgo-water-requirements.htm
https://www.gardeningknowhow.com/ornamental/trees/ginkgo/how-to-prune-a-ginkgo.htm