Q.I Have Two Large Potted Asian Dogwood Trees The Leaves Are Turning Yellow And Are Droopy, Why?
I do water when ever they look dry but doesn’t seem to make difference.

Certified GKH Gardening Expert
It looks like it needs to be moved up in pot size at least in depth. It may be potbound. You also can root prune trees in containers.
https://www.gardeningknowhow.com/ornamental/trees/dogwood/dogwoods-in-container.htm
https://www.gardeningknowhow.com/ornamental/trees/dogwood/growing-kousa-dogwood-trees.htm
https://www.gardeningknowhow.com/ornamental/trees/tgen/root-pruning-trees-shrubs.htm