Mulberry Tree

What is wrong with my mulberry tree ?
Why are the leaves looking like that ?
And what can I do about it ?

It is a leaf spot possibly fungal by the coloration but I can't say for sure. It may be Cercospora.

I agree with Loretta. Definitely fungal leaf spot. It's pretty unmistakable. The tree would require preventative treatment with a fungicide, and you would have to cover the entire tree.

In the future, hygiene is important. All leaves and debris from the tree should be removed at the end of the season. In the spring, new infections start from spores on the ground, and it is also spread by wind and rain. If you pick up all the fallen leaves, you will get better control next year.

So do I need to spray the tree and ground ? And with what ?
We just moved here and the yard is in s pitiful state

How big is the tree? Were you part of all that rain in Texas? If so, it could just be a bad year with conditions conducive for that fungus and things will be better next year assuming it isn't as wet.
As for sprays if you choose to use one, I would contact your extension center and see what is legal and recommended in your state and if it is a big tree, you really can't do it yourself. The spray will only help prevent it from getting worse and you will have to do everything that Donna listed above.

Here is Texas A&M page on Mulberry from their Texas Plant Disease Handbook. Notice they don't list chemical treatments specifically because it is a liability. They might tell you over the phone.

https://plantdiseasehandbook.tamu.edu/landscaping/trees/mulberry/

Texas A&M sick plant diagnosis. There is a fee charged for that.
http://agrilifeextension.tamu.edu/solutions/sick-plant-diagnosis/

Texas A&M Agrilife Extension Plant and Tree page:
http://agrilifeextension.tamu.edu/browse/featured-solutions/plants-trees/

Agrilife Extension office locations by county
http://counties.agrilife.org/

Thank You both for your replies .
I just moved onto the property .
And yes, we did have a lot of rain here in this area . Our local lake is 22 feet above its normal level . I noticed the Texas Ash in the front of the house has the same spots on their leaves .

You're welcome. I imagine that this is a common problem in your area this year and you might get more information by talking to the extension center. They should have a hotline for residents to ask questions. Now realize that your "Master Gardener" on the other end may be someone with years of experience or it could be someone that thought this would be a good hobby try. Usually though, if that person can't help you, they should take down your problem and have someone call you back with what to do.

Here is the page on Ash.
https://plantdiseasehandbook.tamu.edu/landscaping/trees/ash/

Thank you so much .