Is this a new planting or is it an established plant?

Where are you generally such as nearest large city?

It is a very large established plant. I am in west Texas.

I’ve not seen anything like that. Can you think of anything unusual or changed as far as growing conditions such as a frost after leaf-out or excessive rain or or nearby use of weed-n-feed or herbicide sprayed nearby that might have drifted? The white dots resemble damage from sucking insects, though they seem really widespread on your plant. Do you see any evidence of tiny insects on the top or bottom surfaces of the leaves or on the stems?

If you don’t get more help here than my nonhelp, you could check with your local USDA Cooperative Extension Service office to see if they can ID the issue from fresh samples.

Thank you, it turned out to be leafhoppers!

Thanks for reporting back.