We need a tad of info, please.

When did you plant them?
And how?
And how have you watered them?

this spring was two years.
DH dug a good size hole, and the roots are kinda mounded if thats makes sense.
I have drip lines in the flower beds, two on each tree.

The ground seems hard to me, I don't like planting flowers in it because its hard for me to dig, once the flowers are in they seem to do fine.

Two common causes of such problems are bacterial blight (Pseudomonas) and verticillium wilt.

And depending upon where the drippers were placed -- drought.

Neglected to add. Also how long and how often the system was run.