My walnut trees are loosing all their leaves......why?

Walnuts are the last tree to leaf out in the spring and first to drop there leaves in the fall, make that first in the summer, to loose them. I sometimes wonder how they have time to make a nut. RScott

Well, we had several tree growing in our backyard at one time. Big, old, beautiful oaks and pecans and sicamores. Last summer, they all started losing their leaves and later some limbs. Finally, when the biggest pecan tree fell over, we realized the problem: gophers. They had absolutely destroyed the roots of every single tree. We head a pest control guy come to get them, hoping to slavage what was left of our yard. Out of 20 something trees, there are only 7 left... What I mean to say is this: just because you can't SEE anything eating your tree, doesn't mean nothing is.

When was the last time you fertilized it? Try that